Outdoor entertaining on a deck often involves preparing a meal. If the menu is just burgers and hot dogs, most of that food prep takes place at the grill. But even the simplest fare still involves those inevitable trips back and forth to the kitchen to toss a salad, warm up a side dish, or replenish the cold drinks. More complex meals will keep the chef in the kitchen even longer—and that means less time spent out on the deck with family and friends. Wouldn’t it be great if you could bring the kitchen to the deck to take care of more—or even all—of those food prep tasks?
At one time, outdoor kitchens were still more fantasy than reality, but that’s no longer the case. Today, Americans are increasingly seeing their decks as important outdoor entertainment areas, and not just places to park the patio table and grill. An assortment of custom grills, outdoor appliances, and storage cabinets can help you transform your deck into a fully functional kitchen. These appliances are UL-listed, so your kitchen doesn’t have to be located in a covered porch or tucked under a roof. You can cook and prepare right where you serve. Outdoor appliances are generally more expensive than their indoor cousins, but if outdoor entertaining is an important part of your lifestyle, you can now enjoy it more fully than ever before and without compromise.
For years, better quality grills have included a sideburner and second grate to keep food warm. Now, you can purchase expansive grilling stations that may include dedicated infrared warming drawers, storage cabinets and drawers, insulated cubbies for ice, and extended serving counters. They’re a relatively affordable way to take your grilling and food preparation tasks to the next level, and you can buy these units at most home centers.
Self-contained grilling stations are just one of many appliance options to choose from. For more culinary convenience, you can also buy outdoor-rated ovens, multi-burner rangetops and refrigerators, ice makers, and beverage coolers from a number of reputable manufacturers. Ovens and rangetops are heated by either propane or natural gas, depending on the model. They’re designed as modular components that fit into a bank of cabinets or a custom-built kitchen island. Outdoor refrigerators are relatively compact and nest under a countertop where they can be at least partially sheltered from the elements. They range in capacity from around 3 to 6 cubic feet. Outdoor sinks, wet bars, and dedicated food prep stations are other options you might consider adding to your deck kitchen.
Once you step beyond a one-piece grilling station, you’ll need to store a stove, refrigerator, or other appliances in a system of cabinets or an island base of some kind. This could be as simple as an enclosed framework with a countertop, or it can be as elaborate as you like. Chances are, you’ll want to include a few storage cabinets and drawers to keep utensils, cookware, and other supplies close at hand. Some cabinet manufacturers offer weather-resistant cabinets made from teak, cypress, mahogany, or other exterior woods. They’re available as modular components that can be mixed and matched like other cabinetry. Polyethylene, marine-grade polymer, or stainless steel cabinets are more options to consider: they’re corrosion-resistant, waterproof, and hypoallergenic. It’s a good idea to buy your appliances first, then design an island or bank of cabinets that will fit what you own.
A variety of countertop materials could make a durable and attractive serving surface for your kitchen. Porcelain tile is weather-resistant and affordable, and it’s manufactured in virtually any style and color you can dream of. You could choose a fabricated countertop made of stainless steel, soapstone, granite, or marble. Or, build your counter from a piece of tempered glass. If your deck kitchen will be sheltered under an awning or roof, solid-surface material is also good choice. However, the polymer blends that make up solid-surface materials aren’t formulated to be UV stable, and they could deteriorate over time.
If you build your own countertop, be sure to start with a substrate layer of cement backer board if you use grouted tile or other permeable material. It will prevent water from seeping through to appliances or into storage cabinets.
For handy do-it-yourselfers, designing a weatherproof kitchen island can offer a hearty challenge and an excellent chance to explore some new building materials. Start with a framework of pressure-treated or cedar lumber, and sheathe it with waterproof cement backer board. Then, cover the exposed surfaces with patio tile, stucco, veneered stone or brick. Or, use exterior plywood as the substrate for your island framework, then follow with vinyl, fiber cement, or cedar lap siding to match the siding of your house. You could even use composite decking to sheathe your kitchen island or grilling station so it visually ties in with your deck’s design. Or, wrap the outside in sheets of stainless steel or aluminum for a sleek, modern look.
Decks are significant investments, so you should try to use yours as much as possible. Don’t let those dog days of summer, a chilly fall afternoon, or sundown cut your deck enjoyment short. A few carefully chosen accessories can improve creature comforts and get you back out on the deck earlier each spring or extend your entertaining later into the year. If you are a serious audiophile or sports fan, an outdoor sound system or television might be just what you need to spend more time outdoors and on the deck. Manufacturers of lighting and deck accessories are continually expanding their product lines. Visit their websites or attend a home and garden show to get a better taste of what’s new and exciting in deck accessories. The selection of products on display at your local home center are just the tip of the iceberg.
The following pages cover a variety of deck accessories that will make your deck a more practical and vital part of your leisure lifestyle.
The wiring installation shown on the following pages provides step-by-step instructions for installing light fixtures and power receptacles on a deck. These instructions are based on the National Electrical Code (NEC), which stipulates minimum standards for outdoor wiring materials. But because climate and soil conditions vary from region to region, always check with your local building and electrical codes for additional restrictions in your area. For example, some codes require that all underground cables be protected with conduit, even though the NEC allows UF cable to be buried without protection at the proper depths.
Note: This project requires general knowledge of electrical materials and techniques beyond the specific instructions shown here. Make certain you know how to do this work before attempting this project.
Visit your electrical inspector to check local code requirements for outdoor wiring and to obtain a permit for your project. Because outdoor wiring is exposed to the elements, it requires the use of special weatherproof materials, including UF cable, rigid metal or schedule 40 PVC plastic conduit, and weatherproof electrical boxes and fittings. Some local codes allow either rigid metal or PVC plastic, while others allow only metal.
For most homes, an outdoor circuit for a deck is a modest power user. Adding a new 15-amp, 120-volt circuit provides enough power for most needs. However, if your circuit will include more than three large light fixtures (each rated for 30 watts or more) or more than four receptacles, plan to install a 20-amp, 120-volt circuit.
Consider the circuit length when choosing cable sizes for the deck circuit. In very long circuits, normal wire resistance leads to a substantial drop in voltage. If your circuit extends more than 50 feet, use cable wire that is one gauge larger to reduce the voltage drop.
For example, a 15-amp circuit that extends more than 50 feet should be wired with 12-gauge wire instead of the usual 14-gauge.
Plan to bury UF cables 12" deep if the wires are protected by a GFCI and the circuit is no larger than 20 amps. Use metal conduit or bury cable at least 24" deep if the circuit is larger than 20 amps (photo 1).
Prevent shock by making sure all outdoor receptacles are GFCI protected. A single GFCI receptacle can be wired to protect other fixtures on the circuit. Outdoor receptacles should be at least 12" above ground level and enclosed in weatherproof electrical boxes with watertight covers (photo 2).
When laying underground cables, save time and minimize lawn damage by digging trenches as narrow as possible. Plan the circuit to reduce the length of cable runs. If your soil is sandy, or very hard and dry, water the ground thoroughly before you begin digging.
Mark the outline of the trenches with wooden stakes and string.
Cut two 18"-wide strips of plastic, and place one strip on each side of the trench outline.
Remove blocks of sod from the trench outline, using a shovel. Cut sod 2" to 3" deep to keep roots intact. Place the sod on one of the plastic strips and keep it moist but not wet. It should be replaced within two or three days, otherwise the grass underneath the plastic may die.
Dig the trenches to the depth required by your local code. Heap the dirt onto the second strip of plastic (photo 3).
To run cable under a sidewalk, cut a length of metal conduit about 12" longer than the width of sidewalk, then flatten one end of the conduit to form a sharp tip. Drive the conduit through the soil under the sidewalk using a ball-peen or masonry hammer and a wood block to prevent damage to the pipe (photo 4). Cut off the ends of the conduit with a hacksaw, leaving about 2" of exposed conduit on each side. Attach a compression fitting and plastic bushing to each end of the conduit. The plastic fittings will prevent the sharp edges of the conduit from damaging the cable sheathing.
If the trenches must be left unattended during the project, temporarily cover them with scrap plywood to prevent accidents.
Outline the GFCI receptacle box on the exterior wall of the house. First drill pilot holes at the corners of the box outline, then use a piece of stiff wire to probe the wall for electrical wires or plumbing pipes. Complete the cutout with a jigsaw or reciprocating saw. Masonry variation: To make cutouts in masonry, drill a line of holes inside the box outline using a masonry bit, then remove the waste material with a masonry chisel and ball-peen hammer.
Install NM cable from the circuit breaker panel to the GFCI cutout. Allow an extra 24" of cable at the panel end and an extra 12" at the GFCI end. Attach the cable to framing members with cable staples. Strip 10" of outer sheathing from the GFCI end of the cable and 3/4" of insulation from each wire.
Open one knockout for each cable that will enter the GFCI box. Insert the cables so at least 1/4" of sheathing reaches into the box. Push the box into the cutout and tighten the mounting screw until the bracket draws the plaster ears tight against the wall (photo 5).
Position a foam gasket over the GFCI box, then attach an extension ring to the box, using the mounting screws included with the extension ring. Seal any gaps around the extension ring with silicone caulk.
Measure and cut a length of IMC conduit (steel conduit) to reach from the bottom of the extension ring to a point about 4" from the bottom of the trench. Attach the conduit to the extension ring using a compression fitting (photo 6). Anchor the conduit to the wall with a pipe strap and masonry screws. Or use masonry anchors and pan-head screws. Drill pilot holes for the anchors using a masonry drill bit.
Attach compression fittings to the ends of the metal sweep fitting, then attach the sweep fitting to the end of the conduit. Screw a plastic bushing onto the exposed fitting end of the sweep to keep the metal edges from damaging the cable.
At the deck, attach mounting ears to the back of a weatherproof receptacle box, then attach the box to the deck frame by driving galvanized screws through the ears and into the post.
Measure and cut a length of IMC conduit to reach from the bottom of the receptacle box to a point about 4" from the bottom of the trench. Attach the conduit to the box with a compression fitting. Attach a sweep fitting and plastic bushing to the bottom of the conduit using compression fittings (photo 7).
Cut a length of IMC conduit to reach from the top of the receptacle box to the switch box location. Attach the conduit to the receptacle box with a compression fitting. Anchor the conduit to the deck frame with pipe straps.
Attach mounting ears to the back of the switch box, then loosely attach the box to the conduit with a compression fitting. Anchor the box to the deck frame by driving galvanized screws through the ears and into the wood. Tighten the compression fitting with a wrench. Measure and cut a short length of IMC conduit to reach from the top of the switch box to the deck light location. Attach the conduit with a compression fitting (photo 8).
Measure and cut all UF cables, allowing an extra 12" at each box. At each end of the cable, use a utility knife to pare away about 3" of outer sheathing, leaving the inner wires exposed.
Feed a fish tape down through the conduit from the GFCI box. Hook the wires at one end of the cable through the loop in the fish tape, then wrap electrical tape around the wires up to the sheathing. Carefully pull the cable through the conduit (photo 9).
Lay the cable along the bottom of the trench, making sure it is not twisted. Where cable runs under a sidewalk, use the fish tape to pull it through the conduit.
Use the fish tape to pull the end of the cable up through the conduit to the deck receptacle box at the opposite end of the trench (photo 10). Remove the cable from the fish tape.
Cut away the electrical tape at each end of the cable, then clip away the bent wires. Bend back one of the wires in the cable, and grip it with needlenose pliers. Grip the cable with another pliers, then pull back on the wire, splitting the sheathing and exposing about 10" of wire. Repeat with the remaining wires, then cut off excess sheathing with a utility knife. Strip
3/4" of insulation from the end of each wire using a combination tool.
Measure, cut, and install a cable from the deck receptacle box to the outdoor switch box, using the fish tape. Strip 10" of sheathing from each end of the cable, then strip 3/4" of insulation from the end of each wire using a combination tool.
Attach a grounding pigtail to the back of each metal box and extension ring. Join all grounding wires with a wire connector. Tuck the wires inside the boxes, and temporarily attach the weatherproof coverplates until the inspector arrives for the rough-in inspection (photo 11).
At the GFCI receptacle, connect the black feed wire from the power source to the brass terminal marked “line.” Connect the white feed wire from the power source to the silver screw terminal marked “line.”
Attach the short white pigtail wire to the silver screw terminal marked “load,” and attach a short black pigtail wire to the brass screw terminal marked “load.”
Connect the black pigtail wire to all the remaining black circuit wires using a wire connector. Connect the white pigtail wire to the remaining white circuit wires.
Attach a grounding pigtail to the grounding screw on the GFCI. Join the grounding pigtail to the bare copper grounding wires using a wire connector (photo 12).
Carefully tuck the wires into the box. Mount the GFCI, then fit a foam gasket over the box and attach the weatherproof coverplate.
At each remaining receptacle in your deck circuit, connect the black circuit wires to the brass screw terminals on the receptacle. Connect the white circuit wires to the silver screw terminals on the receptacle. Attach a grounding pigtail to the grounding screw on the receptacle, then join all grounding wires with a wire connector.
Carefully tuck all wires into the box, and attach the receptacle to the box using the mounting screws. Fit a foam gasket over the box, and attach the weatherproof coverplate.
Thread the wire leads of the light fixture through a threaded compression fitting. Screw the union onto the base of the light fixture (photo 13).
Feed the wire leads through the conduit and into the switch box. Slide the light fixture onto the conduit, and tighten the compression fitting.
Switches for outdoor use have weatherproof coverplates with built-in toggle levers. The lever operates a single-pole switch mounted to the inside of the coverplate.
Connect the black circuit wire to one of the screw terminals on the switch, and connect the black wire lead from the light fixture to the other screw terminal.
Connect the white wire lead to the white circuit wire with a wire connector (photo 14). Use a wire connector to join the grounding wires.
Low-voltage recessed lights are great for decks. Installed inconspicuously in the deck boards, they provide accent lighting for plant boxes or pathway lighting for stairs.
Use the template or trace the bottom of the fixture onto the treads to mark a hole for each light. Center the fixture on the tread, 1 to 2" from the edge (the hole will center on the gap between the 2 × 6s on most deck stairs).
Drill holes at the corners, then cut the holes with a jigsaw (photo 1).
Test the fixtures to be sure they will fit (they should fit snugly), and adjust the holes as necessary.
Run cable to the stairs from an existing low-voltage system or from a new transformer. Drill a hole in the bottom riser if necessary, and snake the cable under the stairs along the inside edge.
Pull a loop of cable through each of the holes for the fixtures and temporarily secure it to the tread with tape (photo 2).
At the middle of the first loop of cable in the series, separate 3 to 4" of the two conductors in the cable by slicing down the center.
Strip about 2" of insulation off of each wire. Cut the wire in the center of the stripped section, and twist the two ends and the end of one of the fixture wires into an outdoor wire connector (photo 3). Secure the connection with electrical tape.
Repeat with the other fixture wire and the other circuit wire.
Tuck the wires back into the hole, and place the fixture into the hole.
Test each fixture before installing the next one.
Rope light is thin, flexible, clear tubing with tiny light bulbs embedded every few inches along its length. Most rope lights are meant to plug into a receptacle and use household current. While this is all right for indoor decorating, it limits their use outdoors. Low-voltage versions, however, are powered by transformers and can be connected inconspicuously to a low-voltage landscape lighting circuit. They are available from specialty lighting stores and catalogs.
Run a cable from a transformer or from a nearby low-voltage circuit using a T-connector.
Route the cable up a post at the end of the rail, and secure it with cable staples. Leave enough length at the end of the cable to connect it to the rope light (photo 1).
Secure the rope light to the underside of the railing with U-channel. Cut the channel to length, and nail it to the bottom of the railing.
Press the rope into the channel (photo 2).
Connect the fixture cord to the end of the rope with the twist-on fitting.
Connect the rope wires to the branch cable with a cable connector designed for low-voltage outdoor cable (photo 3).
Cap the end of the rope with a plastic cap.
Second-story walkout decks can be a mixed blessing. On top, you have an open, sun-filled perch with a commanding view of the landscape. The space below the deck, however, is all too often a dark and chilly nook that is functionally unprotected from water runoff. As a result, an under-deck area often ends up as wasted space or becomes a holding area for seasonal storage items or the less desirable outdoor furniture.
But there’s an easy way to reclaim all that convenient outdoor space—by installing a weatherizing ceiling system that captures runoff water from the deck above, leaving the area below dry enough to convert into a versatile outdoor room. You can even enclose the space to create a screened-in patio room.
The under-deck system featured in this project (see Resources) is designed for do-it-yourself installation.
Its components are made to fit almost any standard deck and come in three sizes to accommodate different deck-joist spacing (for 12", 16", and 24" on-center spacing). Once the system is in place, the under-deck area is effectively “dried in,” and you can begin adding amenities like overhead lighting, ceiling fans, and speakers to complete the outdoor room environment.
The system works by capturing water that falls through the decking above and channeling it to the outside edge of the deck. Depending on your plans, you can let the water fall from the ceiling panels along the deck’s edge, or you can install a standard rain gutter and downspout to direct the water to a single exit point on the ground or a rain barrel. Steps for adding a gutter system are given on pages 261 to 263.
A basic gutter system for a square or rectangular deck includes a straight run of gutter channel with a downspout at one end. Prefabricated vinyl or aluminum gutter parts are ideal for this application. Gutter channels are commonly available in 10-ft. and 20-ft. lengths, so you might be able to use a single channel without seams. Otherwise, you can join sections of channel with special connectors. Shop around for the best type of hanger for your situation. If there’s limited backing to support the back side of the channel or to fasten into, you may have to use strap-type hangers that can be secured to framing above the gutter.
Building a spa tub into a deck is usually done in one of two ways. If you design your deck at exactly the right height, you can create a full inset by resting the tub on a concrete pad and building the deck around it.
But on a low-profile deck, or a tall deck, the most practical solution is to mount the tub on the surface of the deck and build a secondary platform around it, creating a partial inset. As shown on the following pages, the structural design of the deck must be modified to ensure that it can support the added weight of a spa tub filled with water. Make sure your deck plans are approved by the building inspector before you begin work.
Installing a spa tub usually requires the installation of new plumbing and electrical lines. When planning the installation, make sure to consider the location of plumbing pipes, electrical cables, switches, and access panels. For convenience, arrange to have the rough-in work for these utilities done before you install the decking boards.
There’s no need to let a cracked, aging concrete patio ruin the look and enjoyment of your backyard. You can build a very simple deck platform right over the failing slab with very little effort or expense. Make no mistake though, the result will be a beautiful new outdoor platform that improves the look of the home and the yard.
This is an independent deck; the structure is not attached to the house, but is instead laid atop the slab and allowed to move with any shifting in the concrete. It’s constructed on a simple frame base laid level with sleepers over the concrete itself. This means that the deck will be very close to the ground and subject to a great deal of moisture. Only certain types of decking will tolerate those conditions. We’ve used pressure-treated pine deckboards.
The design of the deck is a plain rectangle and can easily be constructed over a weekend. We’ve spruced up the look a bit by laying the decking in a standard “Boardwalk” pattern. More complex patterns would make the deck surface look even more impressive—just remember to do yourself a favor and work the patterns out on graph paper before cutting any decking. Proper planning will inevitably save a lot of waste.
Supplies
Galvanized metal corner brackets (16)
2-1/2" galvanized deck screws
2" composite shims
Circular saw
Miter saw
Power drill and bits
Treated lumber (2 × 4 and 2 × 2)
Sometimes all you need is a simple, easy-to-build platform to complete an otherwise perfect backyard. The project shown here is an “island deck,” detached from the house and requiring no ledger attachment.
That means it has the simplest of foundations; a set of pre-cast concrete pier blocks that are simply set in place, making them far easier to work with than poured footings. The piers are cast to a standardized shape and size: 10" square and 10" high, with slots in the top to accommodate joists and posts. Because the pier blocks are not secured in the ground, the deck “floats.” This allows for movement in response to settling and the freeze-thaw cycle of the soil. Floating pier decks meet most local codes—but check yours just to be sure.
This deck is also low enough to the ground that it won’t require a handrail (unless, in your particular case, the yard slopes severely off to one side).
Supplies
Dek-Block brand pier blocks (25)—see Resources, page 347
3" galvanized deck screws
Circular saw
Miter saw
Power drill and bits
Stain or sealer
Decking Detail
Clear any large rocks or debris from the area over which the deck will be positioned. Measure and mark the locations for the pier blocks. Set out the pier blocks for the center of the deck; you’ll start by building the center “box” rectangle off of which all the other joists will be leveled.
Position three rows of three blocks each. The rows for this deck were placed 46-1/2" OC row to row, with 1 1/2" OC between the pier blocks in each row. Check that each pier block is level, adding or removing dirt underneath to level it as necessary.
Set a 10-ft. long 2 × 6 joist on edge in the slots of the three pier blocks along one end of each row. Hold a carpenter’s level along the top of the joist as a helper raises or lowers the lowest end of the joist.
Cut 4 × 4 posts to match the gap measurements, and place the posts in the pier block sockets. Set the 2 × 6 joist on top of the posts, if any, and check for level again. Adjust as necessary.
Repeat the process with a joist set in the sockets of the outside blocks on the other end of each row. Position the joist as before, and check level with the aid of a helper. Once you’ve established level along the length of the second joist, make sure the joists are level side to side.
Now cut 2 × 6 band joists for the ends of the floor joists. The band joists will be 49-3/4" long. Measure and mark the band joist so that it will extend equal lengths from both sides of where it is screwed to the floor joists.
Use 3" deck screws to screw the band joists to each end of the floor joists to create the center box of the deck floor frame.
Ensure this box is square by measuring diagonally both ways. If the frame is square, the diagonal measurements should be exactly the same.
Position the center joist in this box, cutting 4 × 4 posts as necessary to keep the joist level along its length and in relation to the two outside joists. Screw the band joist into the end of the center floor joist, completing the frame center box. Screw the joists to their 4 × 4 posts in toenail fashion.
Measure and set the remaining pier blocks in place on both sides of the center frame box. There should be a row of three piers and a row of two piers on each side of the center box, as shown in the Framing Plan (page 277).
Cut the shorter outside floor joists to length. Set them in place in the outside piers, and measure and level as before. Cut 4 × 4s as necessary, and set the outside joists in position. Miter the two outside joist ends 22-1/2°. Screw all joists to the posts in toenail fashion.
Complete the outside frame by cutting the remaining six band joists. Miter the ends of the four diagonal band joists 22-1/2° before installing them. Drill pilot holes and screw the band joists to the spacer blocks using 3" deck screws. Install the remaining joists. At each end, the band joists will extend beyond the outside row of pier blocks so no blocks will be visibly exposed at the edge of the deck.
Begin laying the decking at one edge of the octagon, so that the decking lays perpendicular to the floor joists. Place the first deck board into position with its edge aligned with the edge of the band joist. Screw down each decking board using two 3" deck screws per joist.
Continue laying the decking, allowing the boards to overhang the edges of the band joists. Maintain a 1/8" gap between boards.
When all the decking boards have been screwed down, snap a chalk line along the edges over which the deck boards hang; use a circular saw equipped with a carbide blade to cut the deck board ends so that the decking is flush with the band joists.
Stain, paint, or finish the deck as you prefer, including the rim joists. Add other built-on structures to suit your needs.
Sometimes less really is more. This modest deck has a pleasing shape and is perched high enough to provide a clear view of the yard. Even better, the deck is a study in simplicity and it won’t cost you a lot in either time or money. The framing and decking plans are straightforward and uncomplicated. You can likely build the entire structure over the course of two or three weekends, even if you have limited carpentry and building experience. That means that before a month is out, you’ll have access to a convenient outdoor platform that can be used for a relaxing meal surrounded by nature, a place to read the paper, or to just sit and recharge your batteries after a long day at work.
Supplies
10"-diameter footing forms (3)
8"-diameter footing forms (2)
J-bolts (5)
6 × 6" metal post anchors (3)
4 × 4" metal post anchors (2)
6 × 6" metal post-beam caps (3)
2 × 8" joist hangers (16)
1 1/2 × 6" angle brackets (6)
1 1/2 × 10" angle brackets (10)
3" galvanized deck screws
16d galvanized nails
2-1/2" galvanized deck screws
3/8 × 4" lag screws and washers (20)
3/8 × 5" lag screws and washers (22)
1/4 × 1 1/4" lag screws and washers (80)
Flashing (12 ft.)
Exterior silicone caulk (3 tubes)
Concrete as needed
Stairway Detail
Railing Detail
Draw a level outline on the siding to show where the ledger and the end joists will fit against the house. Install the ledger so that the surface of the decking boards will be 1" below the indoor floor level. This height difference prevents rainwater or melted snow from seeping into the house.
Cut out the siding along the outline with a circular saw. To prevent the blade from cutting the sheathing that lies underneath the siding, set the blade depth to the same thickness as the siding. Finish the cutout with a chisel, holding the beveled side in to ensure a straight cut.
Cut galvanized flashing to the length of the cutout, using metal snips. Slide the flashing up under the siding at the top of the cutout.
Measure and cut the ledger (A) from pressure-treated lumber. Center the ledger end to end in the cutout, with space at each end for the end joist.
Brace the ledger in position under the flashing. Tack the ledger into place with galvanized deck screws.
Drill pairs of 3/8" pilot holes at 16" intervals through the ledger and into the house header joist. Counterbore each pilot hole 1/2", using a 1 3/8" spade bit. Attach the ledger to the wall with 3/8 × 4" lag screws and washers, using a ratchet wrench.
Apply a thick bead of silicone caulk between siding and flashing. Also seal the lag screw heads and the cracks at the ends of the ledger.
Referring to the measurements shown in the Framing Plan (page 284), mark the centerlines of the two outer footings on the ledger and drive nails at these locations.
Set up temporary batterboards and stretch a mason’s string out from the ledger at each location. Make sure the strings are perpendicular to the ledger, and measure along the strings to find the centerpoints of the posts.
Set up additional batterboards and stretch another string parallel to the ledger across the post centerpoints.
Check the mason’s strings for square by measuring diagonally from corner to corner and adjusting the strings so that the measurements are equal.
Measure along the cross string and mark the center post location with a piece of tape.
Use a plumb bob to transfer the footing centerpoints to the ground, and drive a stake to mark each point.
Remove the mason’s strings and dig the post footings, using a clamshell digger or power auger. Pour 2" to 3" of loose gravel into each hole for drainage. Note: When measuring the footing size and depth, make sure you comply with your local building code, which may require flaring the base.
Cut the footing forms to length using a reciprocating saw or handsaw, and insert them into the footing holes, leaving 2" above ground level. Pack soil around the forms for support, and fill the forms with concrete, tamping with a long stick or rod to eliminate any air pockets.
Screed the tops flush with a straight 2 × 4. Insert a J-bolt into each footing, set so 3/4" to 1" of thread is exposed. Retie the mason’s strings and position the J-bolts at the exact center of the posts, using a plumb bob as a guide. Clean the bolt threads before concrete sets.
Lay a long, straight 2 × 4 flat across the footings, parallel to the ledger. With one edge tight against the J-bolts, draw a reference line across each footing.
Place a metal post anchor on each footing, centering it over the J-bolt and squaring it with the reference line. Attach the post anchors by threading a nut over each bolt and tightening with a ratchet wrench.
Cut the posts to length, adding approximately 6" for final trimming. Place the posts in the anchors and tack into place with one nail.
With a level as a guide, use braces and stakes to plumb the posts. Finish nailing the posts to the anchors.
Determine the height of the beam by extending a straight 2 × 4 from the top edge of the ledger across the face of a post. Level the 2 × 4, and draw a line on the post along the bottom of the 2 × 4.
From that line, measure 15 1/2" down the post and mark the bottom of the beam. Using a level, transfer this line to the remaining posts.
Use a combination square to extend the level line completely around each post. Cut the posts to this finished height using a circular saw and reciprocating saw.
Cut the beam boards (C) several inches longer than necessary, to allow for final trimming.
Join the beam boards together with 2-1/2" galvanized deck screws. Mark the post locations on the top edges and sides, using a combination square as a guide.
Attach the post-beam caps to the tops of the posts. Position the caps on the post tops, and attach using 10d joist hanger nails.
Lift the beam into the post-beam caps, with the crown up. Align the post reference lines on the beam with the post-beam caps. Note: You should have at least two helpers when installing boards of this size and length, at this height.
Fasten the post-beam caps to the beam on both sides using 10d joist hanger nails.
Measure and cut the end joists to length using a circular saw.
Attach end joists to the ends of the ledger with 10d common nails.
Measure and cut the rim joist (E) to length with a circular saw. Fasten to end joists with 16d galvanized nails.
Square up the frame by measuring corner to corner and adjusting until measurements are equal. Toenail the end joists in place on top of the beam, and trim the beam to length.
Reinforce each inside corner of the frame with an angle bracket fastened with 10d joist hanger nails.
Mark the outlines of the inner joists (F) on the ledger, beam, and rim joist (see Framing Plan, page 284), using a tape measure and a combination square.
Attach joist hangers to the ledger and rim joist with 10d joist hanger nails, using a scrap 2 × 8 as a spacer to achieve the correct spread for each hanger.
Measure, mark, and cut lumber for inner joists using a circular saw. Place the joists in the hangers with crown side up, and attach at both ends with 10d joist hanger nails. Be sure to use all the holes in the hangers.
Align the joists with the marks on top of the beam, and toenail or strap in place.
Cut the first decking board (G) to length, position it against the house, and attach by driving a pair of 2-1/2" galvanized deck screws into each joist.
Position the remaining decking boards with the ends overhanging the end joists. Leave a 1/8" gap between boards to provide for drainage, and attach the boards to each joist with a pair of deck screws.
Every few rows of decking, measure from the edge of the decking to the outside edge of the deck. If the measurement can be divided evenly by 5-5/8, the last board will fit flush with the outside edge of the deck as intended. If the measurement shows that the last board will not fit flush, adjust the spacing as you install the remaining rows of boards.
If your decking overhangs the end joists, snap a chalk line to mark the outside edge of the deck and cut flush with a circular saw. If needed, finish the cut with a jigsaw or handsaw where a circular saw can’t reach.
Refer to the Framing Plan (page 284), for the position of the stairway footings.
Locate the footings by extending a 2 × 4 from the deck, dropping a plumb bob, and marking the centerpoints with stakes.
Dig post holes with a clamshell digger or an auger, and pour the stairway footings using the same method as for the deck footings.
Attach metal post anchors to the footings, and install posts (H), leaving them long for final trimming.
Cut the stair stringers (I) to length and use a framing square to mark the rise and run for each step (see Stairway Detail, page 285). Draw the tread outline on each run. Cut the angles at the end of the stringers with a circular saw. (For more information on building stairways, see pages 140 to 159.)
Position a 1 1/2 × 10" angle bracket flush with the bottom of each tread line. Attach the brackets with 1 1/4" lag screws.
Fasten angle brackets to the upper ends of the stringers, using 1 1/4" lag screws; keep the brackets flush with cut ends on stringers. Position the top ends of the stringers on the side of the deck, making sure the top point of the stringer and the surface of the deck are flush.
Attach the stringers by driving 10d joist hanger nails through the angle brackets into the end joist, and by drilling 1/4" pilot holes from inside the rim joist into the stringers and fastening with 3/8 × 4" lag screws.
To connect the stringers to the stair posts, drill two 1/4" pilot holes and counterbore the pilot holes 1/2" deep with a 1" spade bit. Use a ratchet wrench to fasten the stringers to the posts with 4" lag screws and washers.
Measure the length of the stair treads (J) and cut two 2 × 6 boards for each tread. For each tread, position the front board on the angle bracket so the front edge is flush with the tread outline on the stringers. Attach the tread to the brackets with 1/4 × 1 1/4" lag screws.
Place the rear 2 × 6 on each tread bracket, keeping a 1/8" space between the boards. Attach with 1 1/4" lag screws.
Attach the treads for the lowest step by driving deck screws through the stringers.
Cut posts (K) and balusters (L) to length (see Railing Detail, page 285) with a power miter saw or circular saw. Cut the top ends square, and the bottom ends at a 45° angle.
Mark and drill two 3/8" pilot holes at the bottom end of each post. Holes should be spaced 4" apart and counterbored 1/2", with a 1" spade bit.
Drill two 1/8" pilot holes, 4" apart, near the bottom of each baluster. At the top of each baluster, drill a pair of 1/8" pilot holes spaced 1 1/2" apart.
Using a combination square, mark the locations of the posts on the outside of the deck. Note: Position corner posts so there is no more than 4" clearance between them.
Clamp each post in place. Keep the beveled end flush with the bottom of the deck, and make sure the post is plumb. Use an awl to mark pilot hole locations on the side of the deck. Remove posts and drill 3/8" pilot holes at marks. Attach the railing posts to the side of the deck with 1/2 × 5" lag screws and washers.
Cut top rails (M) to length, with 45° miters on the ends that meet at the corners. Attach to posts with 2-1/2" deck screws, keeping the top edge of the rail flush with the top of the posts. Join rails by cutting 45° bevels at ends.
Temporarily attach stairway top rails with 3" galvanized screws. Mark the outline of the deck railing post and top rail on the back side of the stairway top rail. Mark the position of the top rail on the stairway post. Use a level to mark a plumb cutoff line at the lower end of the rail. Remove the rail.
Cut the stairway post to finished height along the diagonal mark, and cut the stairway rail along outlines. Reposition the stairway rail and attach with deck screws.
Attach the balusters between the railing posts at equal intervals of 4" or less. Use deck screws, and keep the top ends of balusters flush with the top rail. On the stairway, position the balusters against the stringer and top rail, and check for plumb. Draw a diagonal cut line at top of baluster and trim to final height with a power miter saw.
Confirm measurements, and cut rail cap sections (N) to length. Position sections so that the inside edge overhangs the inside edge of the rail by 1/4". Attach the cap to the rail with deck screws. At corners, miter the ends 45° and attach caps to posts.
Cut the cap for stairway rail to length. Mark angle of deck railing post on side of cap and bevel-cut the ends of the cap. Attach cap to top rail and post with deck screws. Note: Local building codes may require a grippable handrail. Check with your building inspector.
This simple rectangular deck provides a secure, convenient outdoor living space. The absence of a stairway prevents children from wandering away or unexpected visitors from wandering in. It also makes the deck easier to build.
Imagine how handy it will be to have this additional living area only a step away from your dining room or living room, with no more need to walk downstairs for outdoor entertaining, dining, or relaxing.
And if you’d like to add a stairway, just refer to the chapter on stair-building (see page 140).
Supplies
12"-diameter footing forms (3)
J-bolts (3)
6 × 6" metal post anchors (3)
2 × 10" joist hangers (26)
Galvanized deck screws (3", 2-1/2", and 1 1/4")
Joist hanger nails
1/2 × 4" lag screws and washers (28)
1/2 × 5" lag screws and washers (16)
1/2 × 7" carriage bolts, washers, and nuts (6)
16d galvanized nails
Metal flashing (18 ft.)
Silicone caulk (3 tubes)
Concrete as required
Railing Detail
Face Board Detail
Draw a level outline on the siding to show where the ledger and the end joists will fit against the house. Install the ledger so that the surface of the decking boards will be 1" below the indoor floor level. This height difference prevents rainwater or melted snow from seeping into the house.
Cut out the siding along the outline with a circular saw. To avoid cutting the sheathing that lies underneath the siding, set the blade depth to the same thickness as the siding. Finish the cutout with a chisel, holding the beveled side in to ensure a straight cut.
Cut galvanized flashing to the length of the cutout, using metal snips. Slide the flashing up under the siding at the top of the cutout.
Measure and cut the ledger (A) from pressure-treated lumber. Center the ledger end to end in the cutout, with space at each end for the end joists.
Brace the ledger into position under the flashing. Tack the ledger into place with galvanized nails.
Drill pairs of 3/8" pilot holes at 16" intervals through the ledger and into the house header joist. Counterbore each pilot hole 1/2", using a 1 3/8" spade bit. Attach the ledger with 4" lag screws and washers using a ratchet wrench.
Apply silicone caulk between the siding and flashing. Also seal the lag screw heads and the cracks at the ends of the ledger.
To establish a reference point for locating the footings, drop a plumb bob from the ends of the ledger down to the ground.
Position a straight 14 ft.-long 2 × 4 perpendicular to the house at the point where the plumb bob meets the ground. Note: If you are building on a steep slope or uneven ground, the mason’s string method of locating footing positions will work better (see pages 70 to 75).
Check for square, using the 3-4-5 triangle method. From the 2 × 4, measure 3 ft. along the wall and make a mark. Next, measure 4 ft. out from the house and make a mark on the 2 × 4. The diagonal line between the marks will measure 5 ft. when the board is accurately square to the house. Adjust the board as needed, using stakes to hold it in place.
Extend another reference board from the house at the other end of the ledger, following the same procedure.
Measure out along both boards, and mark the centerline of the footings (see Framing Plan, page 292).
Lay a straight 2 × 4 between the centerline marks, and drive stakes to mark the footing locations.
Remove the boards and dig the post footings, using a clamshell digger or power auger. Pour 2" to 3" of loose gravel into each hole for drainage. Note: When measuring the footing size and depth, make sure you comply with local building codes, which may require flaring the base to 18".
Cut the footing forms to length, using a reciprocating saw or handsaw, and insert them into the footing holes, leaving 2" above ground level. Pack soil around the forms for support, and fill the forms with concrete, tamping with a long stick or rod to eliminate any air gaps.
Screed the tops flush with a straight 2 × 4. Insert a J-bolt into the center of each footing and set with 3/4" to 1" of thread exposed. Clean the bolt threads before the concrete sets.
Lay a long, straight 2 × 4 flat across the footings, parallel to the house. With one edge tight against the J-bolts, draw a reference line across the top of each footing to help orient the post anchors.
Place a metal post anchor on each footing, centering it over the J-bolt and squaring it with the reference line. Attach the post anchors by threading a nut over each bolt and tightening with a ratchet wrench.
The tops of the posts (B) will eventually be level with the bottom edge of the ledger, but initially cut the posts several inches longer to allow for final trimming. Position the posts in the anchors and tack into place with one nail each.
With a level as a guide, use braces and stakes to ensure that the posts are plumb.
Determine the height of the beam by using a chalk line and a line level. Extend the chalk line out from the bottom edge of the ledger, make sure that the line is level, and snap a mark across the face of a post. Use the line and level to transfer the mark to the remaining posts.
Remove the posts from the post anchors and cut to the finished height.
Measure and mark a 3 × 11 1/4" notch at the top of each post, on the outside face. Use a framing square to trace lines on all sides. Rough-cut the notches with a circular saw, then finish with a reciprocating saw or handsaw.
Reattach the posts to the post anchors, with the notch-side facing away from the deck.
Cut the beam boards (C) to length, adding several inches to each end for final trimming after the deck frame is squared up.
Join the beam boards together with 2-1/2" galvanized deck screws. Mark the post locations on the top edges and sides, using a combination square as a guide.
Lift the beam, one end at a time, into the notches with the crown up. Align and clamp the beam to the posts. Note: Installing boards of this size and length, at this height, requires caution. You should have at least two helpers.
Thread a carriage bolt into each pilot hole. Add a washer and nut to the end of each bolt and tighten with a ratchet wrench. Seal both ends of the bolts with silicone caulk.
Cut the tops of the posts flush with the top edge of the beam using a circular saw and reciprocating saw.
Measure and cut the end joists (E) to length using a circular saw.
Attach the end joists to the ends of the ledger with 16d galvanized nails.
Measure and cut the rim joist (F) to length with a circular saw. Fasten it to the ends of the end joists with 16d nails.
Square up the frame by measuring corner to corner and adjusting until the measurements are equal. When the frame is square, toenail the end joists in place on top of the beam.
Trim the ends of the beam flush with the faces of the end joists using a reciprocating saw or a handsaw.
Cut the braces (D) to length (see Elevation, page 293) with a circular saw or power miter saw. Miter both ends at 45°.
Install the braces by positioning them against the beam boards and against the posts. Make sure the outside faces of the braces are flush with the outside faces of the beam and the posts. Temporarily fasten with deck screws.
Secure the braces to the posts with 5" lag screws. Drill two 3/8" pilot holes through the upper end of each brace into the beam. Counterbore to a 1/2"-depth using a 1 3/8" spade bit, and drive lag screws with a ratchet wrench. Repeat for the lower end of the braces into the posts.
Measure and mark the joist locations (see Framing Plan, page 292) on the ledger, rim joist, and beam. Draw the outline of each joist on the ledger and rim joist, using a combination square.
Install a joist hanger at each joist location. Attach one flange of the hanger to one side of the outline, using joist nails. Use a spacer cut from scrap 2 × 8 lumber to achieve the correct spread for each hanger, then fasten the remaining side flange with joist nails. Remove the spacer and repeat the same procedure for the remaining joist hangers.
Measure, mark, and cut lumber for joists (G) using a circular saw. Place joists in hangers with crown side up and attach with joist hanger nails. Align joists with the outlines on the top of the beam, and toenail in place.
Measure, mark, and cut the decking boards (H) to length as needed.
Position the first row of decking flush against the house, and attach by driving a pair of galvanized deck screws into each joist.
Position the remaining decking boards, leaving a 1/8" gap between boards to provide for drainage, and attach to each joist with deck screws.
Every few rows of decking, measure from the edge of the decking to the outside edge of the deck. If the measurement can be divided evenly by 5-5/8", the last board will fit flush with the outside edge of the deck as intended. If the measurement shows that the last board will not fit flush, adjust the spacing as you install the remaining rows of boards.
If your decking overhangs the end joists, snap a chalk line to mark the outside edge of the deck and cut flush with a circular saw set to a 1 1/2" depth. If needed, finish the cut with a jigsaw or handsaw where a circular saw can’t reach.
Measure, mark, and cut the balusters (I) to length, with 45° miters at both ends.
Gang the balusters together and drill two 1/8" pilot holes at both ends.
Clamp a 1 1/2" guide strip flush with the bottom edge of the deck platform to establish the baluster height (see Railing Detail, page 293).
To ensure that the balusters are installed at equal intervals, create a spacing jig, less than 4" wide, from two pieces of scrap material.
Attach the corner balusters first (see Face Board Detail, page 293), using a level to ensure that they are plumb. Then use the spacing jig for positioning, and attach the remaining balusters to the deck platform with 3" deck screws.
Measure, mark, and cut the top rail sections (J) to length. Round over three edges (see Railing Detail, page 293) using a router with a 1/2" round-over bit. Cut 45° miters on the ends that meet at the corners.
Hold or clamp the top rail in position, and attach with 2-1/2" deck screws driven through the balusters.
If you need to make straight joints in the top rail, cut the ends of the adjoining boards at 45°. Drill angled 1/8" pilot holes and join with deck screws.
A diamond decking pattern helps make this a stunning deck. The location, tucked inside a corner of the house, creates an accessible area for small get-togethers, large parties, simple outdoor meals, and relaxing. The location offers privacy, shade, and a place out of the wind. Although we’ve left the posts exposed, you can create an even more integral deck design by adding simple skirting around the base.
The design calls for double joists and blocking for extra strength and stability where decking boards butt together. Joists are spaced 12" on center to support diagonal decking. It takes a little more time to cut the decking boards and match the miter cuts, but the results are spectacular and well worth the effort. The addition of a few low-voltage lights would make this a fabulous nighttime deck as well.
Supplies
10"-diameter footing forms (6)
8"-diameter footing forms (2)
J-bolts (8)
6 × 6" metal post anchors (6)
4 × 4" metal post anchors (2)
2 × 8" single joist hangers (50)
2 × 8" double joist hangers (20)
1 1/2 × 10" angle brackets (12)
3" galvanized deck screws
2-1/2" galvanized deck screws
16d galvanized nails
Joist hanger nails
1/2 × 4" lag screws and washers (78)
1/4 × 1 1/4" lag screws (96)
1/2 × 7" carriage bolts, washers, and nuts (12)
Exterior silicone caulk (6 tubes)
Concrete as needed
Elevation
Stairway Detail
The inside angle of the house should form a right angle. If there is a slight deviation, use shims behind the ledger to create a 90° angle in the corner.
To show where the ledgers will be attached to the house, draw outlines on the wall, using a level as a guide. To locate the top of the ledger outline, measure down from the indoor floor surface 1" plus the thickness of the decking boards. This height difference prevents rain and melting snow from seeping into the house.
Measure and cut the ledgers to length. They will be shorter than the outline on the wall to allow for the width of the rim joist and end joist. (See pages 62 to 68 for information about attaching ledgers on different types of siding.)
Drill pairs of 3/8" pilot holes through the ledgers at 16" intervals. Counterbore the pilot holes 1/2" with a 1 3/8" spade bit.
Brace the ledgers in place, and use a ratchet wrench to attach the ledgers to the walls with 1/2 × 4" lag screws and washers. Seal the screw heads and all cracks between the wall and ledger with silicone caulk.
To locate the footings, stretch mason’s strings between the ledgers and 2 × 4 supports, known as batterboards.
Referring to the measurements shown in the Framing Plan (page 300), mark the centerlines of the footings on the ledgers, and drive a nail into the ledger at each location.
Set up temporary batterboards and stretch a mason’s string out from the ledger at each location. Make sure the strings are perpendicular to the ledger.
Check the mason’s strings for square, using the 3-4-5 triangle method. From the point where each string meets the ledger, measure 3 ft. along the ledger and make a mark. Next, measure 4 ft. out along the string and mark with tape. The distance between the points on the ledger and the string should be 5 ft. If it’s not, adjust the string position on the batterboard accordingly.
Drop a plumb bob to transfer the footing centerpoints to the ground, and drive a stake to mark each point. Remove the strings.
Dig the post footings using a clamshell digger or power auger. Pour 2" to 3" of loose gravel into each hole for drainage. Note: Make sure the footing size and depth comply with your local building code, which may require flaring the base.
Cut the footing forms to length, using a reciprocating saw or handsaw, and insert them into the footing holes so that they extend 2" above grade. Pack soil around the forms for support, and fill the forms with concrete, tamping with a long stick or rod to eliminate any air pockets.
Screed the tops of the footings flush, using a 2 × 4. Insert a J-bolt into the wet concrete of each footing, and set it, with 3/4" to 1" of thread exposed. Retie the mason’s strings and position each J-bolt at the exact center of the post location, using the plumb bob as a guide. Clean the bolt threads before the concrete sets.
Lay a long, straight 2 × 4 flat across each row of footings, parallel to the short ledger. With one edge tight against the J-bolts, draw a reference line across the top of each footing.
Center a metal post anchor over the J-bolt on each footing, and square it with the reference line. Attach the post anchors by threading a nut over each bolt and tightening with a ratchet wrench.
Cut the posts, leaving an extra 6" for final trimming. Place each post in an anchor and tack it in place with one nail.
With a level as a guide, use braces and stakes to ensure that each post is plumb. Finish nailing the posts to the anchors.
Determine the height of the inside beam by extending a straight 2 × 4 from the bottom edge of the long ledger across the row of posts. Level the 2 × 4, and draw a line on the posts. Use the same method to determine the height of the outer beam. Note: The sandwich beam construction described here is no longer allowed by most local codes. If sandwich beams are not allowed by your local code, use special hangers or larger posts to support the blocked beam on the top of the posts.
Cut the beam boards (D), leaving an extra few inches for final trimming.
Position one beam board, crown up, against the row of posts. Tack the board in place with deck screws.
Attach the remaining beam boards to the posts in the same way.
Drill two 1/2" holes through the boards and posts at each joint. Secure the beam boards to the posts with carriage bolts, using a ratchet wrench.
Cut the tops of the posts flush with the tops of the beams, using a reciprocating saw or handsaw.
A double joist at the center of the deck provides extra support for the ends of the decking boards.
Measure, mark, and cut the end joist (E) and the rim joist (F), using a circular saw.
Attach the end joist to the short ledger and the rim joist to the long ledger, using 16d galvanized nails.
Nail the rim joist to the end joist.
Toenail the end joist to the tops of the beams, and cut the ends of the beams flush with the end joist.
Measure, mark, and install the double center joist at the precise center of the deck with double joist hangers.
Measure both ways from the double joist, and mark the centerpoints of the remaining joists at 12" intervals. Using a combination square, mark the outlines of the joists on the ledger, beams, and rim joist.
Nail the joist hangers to the short ledger and rim joist using a scrap 2 × 8 as a spacer to achieve the correct spread for each hanger.
Cut the joists (G) to length. Insert the joists into the hangers with the crown up, and attach them with joist hanger nails. Align the joists with the marks on the beams and toenail them in place.
The ends of the decking boards in the diamond pattern are supported by a row of double blocking at the center of the pattern and a row of single blocking at the edge of the pattern.
To locate the rows of blocking, measure from the inside corner of the house along the long ledger (see Framing Plan, page 300). Drive one screw or nail at 78", and another at 156". Make corresponding marks across from the ledger on the end joist.
Snap chalk lines across the joists, between the ledger and the end joist. The line at 78" is the centerline of the double blocking. The line at 156" is the outer edge of the single blocking. Don’t be concerned if the blocking is not directly over the beams.
Cut double blocking pieces from 2 × 8s nailed together with 10d galvanized nails.
Install the blocking by alternating end nailing and using galvanized joist hangers.
Except for the three rows of straight decking at the top of the stairway, the decking is laid in a diamond pattern.
Begin at the center of the diamond pattern, where the double joist and the double blocking intersect. Cut four identical triangles, as large as possible, from 2 × 6" cedar stock.
Drill 1/8" pilot holes in the ends, position the pieces as shown on page 303, and attach with 3" deck screws.
To install the remaining courses, measure, cut, drill, and attach the first three boards in each course. Then, measure the actual length of the last board to achieve the best fit. For best results, install the decking course by course. Maintain a 1/8" gap between courses.
Once the diamond decking pattern is complete, cut and install the three remaining deck boards.
For the position of the stairway footings, refer to the Framing Plan on page 300. Locate the footings by extending a 2 × 4 from the deck, perpendicular to the rim joist, dropping a plumb bob, and marking the centerpoints on the ground with stakes.
Dig postholes with a clamshell digger or an auger, and pour footings using the same method as for the deck footings. Insert J-bolts, leaving 3/4" to 1" of thread exposed. Allow the concrete to set. Attach metal post anchors.
Cut the stairway posts (K) to length, adding approximately 6" for final trimming. Place the posts in the anchors.
Use a level to ensure that the posts are plumb, and attach the posts to the anchors with 16d galvanized nails.
Cut the stringers (L) to length and use a framing square to mark the rise and run for each step (see Stairway Detail, page 301). Draw the tread outline on each run. Cut the angles at the ends of the stringers with a circular saw. (For a more detailed description of stairway construction, see pages 140 to 159.)
Position an angle bracket flush with the bottom of each tread outline. Drill 1/8" pilot holes in the stringers, and attach the angle brackets with 1 1/4" lag screws.
The treads (M) fit between the stringers, and the stringers fit between the stairway posts. Measure and cut the treads (M) to length, 3" shorter than the distance between the stairway posts.
Assemble the stairway upside down on sawhorses. Mark and drill 1/8" pilot holes at the ends of the treads. Position each front tread with its front edge flush to the tread outline, and attach to the angle brackets with 1/4 × 1 1/4" lag screws.
Attach the rear treads in similar fashion, leaving a 1/8" gap between treads.
Position the stairway in place against the edge of the deck, making sure the top of the stringer is flush with the surface of the deck. From underneath the deck, drill 1/4" pilot holes through the rim joist into the stringers. Attach the stringers to the rim joist with 4" lag screws, using a ratchet wrench.
To fasten the stairway to the stair posts, drill two 1/4" pilot holes through each stringer into a post. Counterbore the pilot holes 1/2" deep with a 1 3/8" spade bit, and use a ratchet wrench to drive 4" lag screws with washers. Seal the screw heads with silicone caulk.
Cut the railing posts (N) and balusters (O) to length (see Railing Detail, page 301) with a power miter saw or circular saw. Cut the tops square and the bottoms at 45° angles.
Drill two 3/8" pilot holes at the bottom end of each railing post, positioned so the lag screws will attach to the rim joist. Counterbore the holes 1/2" deep with a 1 3/8" spade bit.
Drill two 1/8" pilot holes near the bottom of each baluster, spaced 4" apart. At the top of each baluster, drill a pair of 1/8" pilot holes spaced 1 1/2" apart.
With the help of a combination square, draw the outlines of the railing posts around the perimeter of the deck. The posts at the corner must be spaced so there is less than 4" between them.
Hold each railing post in its position, with the end 1 1/2" above the bottom edge of the deck platform (see Railing Detail, page 301). Make sure the post is plumb, and insert an awl through the counterbored holes to mark pilot hole locations on the deck (or use a longer bit).
Set the post aside and drill 3/8" pilot holes at the marks. Attach the railing posts to the deck with 1/2 × 4" lag screws and washers. Seal the screw heads with silicone caulk.
Cut the top rails (P) to length with the ends mitered at 45° where they meet in the corner. Attach them to the railing posts with 3" deck screws, keeping the edges of the rails flush with the tops of the posts.
To position the balusters, measure the total distance between two railing posts, and mark the centerpoint on the top rail. The two railing sections on the long side of this deck will have a baluster at the centerpoint; the two railing sections on the stairway side will have a space at the centerpoint. Note: If the dimensions of your deck vary from the plan, calculate whether you will have a baluster or a space at the center of each section.
Cut a spacer slightly less than 4" wide. Start at the center of each railing section, and position either a baluster or a space over the line. Measure out from the center both ways, marking the outlines of the balusters on the top rail. The end spaces may be narrow, but they will be symmetrical.
To install the balusters, begin next to a railing post and make sure the first baluster is plumb. Install the remaining balusters, holding each one tight against the spacer and flush with the top rail. Attach the balusters with 2-1/2" deck screws.
Cut the deck railing cap (Q) to length, with the ends mitered at 45° where they meet in the corner. Position the railing cap sections so the inside edge overhangs the inside edge of the top rail by 1/4". Attach the cap with 3" deck screws.
Determine the exact size and shape of the stairway top rail. Tack a cedar 2 × 4 across the faces of the stairway post and deck post with 10d galvanized nails. Make sure the angle of the 2 × 4 is parallel with the angle of the stringer below.
On the back side of the 2 × 4, mark the outline of the deck railing post and the end of the deck top rail. On the stairway post, mark a diagonal cutoff line at the top edge of the 2 × 4. At the lower end of the 2 × 4, use a level to mark a plumb cutoff line directly above the end of the stringer.
Remove the 2 × 4 and make the cuts.
Drill 1/8" pilot holes through the stairway top rail. Place in position and attach with 2-1/2" deck screws.
To trim the top ends of the stairway balusters, hold a baluster against the stairway post and draw a diagonal cut line along the top edge of the rail. Trim the baluster. Using this baluster as a template, mark and cut the remaining stairway balusters.
Install the stairway balusters with 2-1/2" deck screws, using the same procedure as for the deck balusters.
Measure the railing caps for the stairway. Cut the caps to size, with the upper ends beveled to fit against the deck posts, and the lower ends beveled to align with the end of the top rail. Install the caps by drilling 1/8" pilot holes and attaching them with 2-1/2" deck screws.
By wrapping around an outside corner of your house, this versatile deck increases your living space and lets you take advantage of views in several directions. The plan also creates two symmetrical areas for sitting or relaxing, providing space for two distinct activities. Our plan also calls for a front stairway for easy access to your yard or garden. The horizontal rails and notched posts provide striking visual elements that enhance the deck’s overall design and add to its intimate nature.
Elevation
Stairway Detail
Footing Location Diagram
Corner Post Detail
Draw a level outline on the siding to show where the ledgers and the adjacent end joist and rim joist will fit against the house.
Position the top edge of the ledgers so that the surface of the decking boards will be 1" below the indoor floor level. This height difference prevents rainwater or melted snow from seeping into the house. Draw the outline long enough to accommodate the thickness of rim joist F-1 and end joist E-2.
Cut out the siding along the outline with a circular saw. To keep the blade from cutting the sheathing underneath the siding, set the blade depth to the same thickness as the siding. Finish the corners of the cutout with a chisel, holding the beveled side in to ensure a straight cut. Cut galvanized flashing to the length of the cutout, using metal snips, and slide the flashing up under the siding.
Measure and cut the ledgers (A) to length from pressure-treated lumber, using a circular saw. Remember, the ledger boards should be shorter than the overall length of the cutouts. Position the ledgers in the cutout, underneath the flashing, and brace them in place. Fasten them temporarily with deck screws.
Drill pairs of 3/8" pilot holes through the ledger and sheathing and into the house header joist at 2 ft. intervals. Counterbore each pilot hole 1/2" deep, using a 1 3/8" spade bit. Attach the ledgers to the wall with 1/2 × 4" lag screws and washers, using a ratchet wrench.
Apply a thick bead of silicone caulk between the siding and the flashing. Also seal the lag screw heads and any gaps between the wall and the ledger.
Referring to the Footing Location Diagram (page 309), stretch mason’s strings across the site, using 2 × 4 batterboards. Check the mason’s strings for square, using the 3-4-5 triangle method. From the point where each string meets the ledger, measure 3 ft. along the ledger and make a mark. Next, measure 4 ft. out along the mason’s string and mark with tape. The distance between the points on the ledger and the string should be 5 ft. If not, adjust the mason’s strings accordingly. Measure along the strings to locate the centerpoints of the footings. Mark the locations with tape.
Drop a plumb bob at the tape locations, and drive stakes into the ground to mark the centerpoints of the footings. Remove the mason’s strings and dig holes for the footings using a clamshell digger or power auger. Pour 2" to 3" of loose gravel into each hole for drainage. Make certain the hole dimensions comply with your local building code, which may require flaring the footings at the base. Cut the footing forms to length using a reciprocating saw or handsaw. Insert the forms into the holes, leaving 2" of each form above grade. Pack soil around the forms.
Fill the forms with concrete and tamp the concrete with a long stick to eliminate any air pockets. Screed the tops flush with a flat 2 × 4. Insert a J-bolt into each footing, leaving 3/4" to 1" of thread exposed.
Retie the mason’s strings and drop a plumb bob to position each J-bolt at the exact center of the footing. Clean the bolt threads before the concrete sets.
Start by laying a long, straight 2 × 4 flat across each pair of footings. With one edge tight against the J-bolts, draw a reference line across each footing.
Place a metal post anchor on each footing, center it over the J-bolt, and square it with the reference line. Thread a nut over each J-bolt and tighten each of the post anchors in place.
Cut the posts (B) to their approximate length, adding several inches for final trimming. Place the posts in the anchors and tack them into place with one nail each.
With a level as a guide, use braces and stakes to plumb the posts. Once the posts are plumb, finish nailing them to the anchors. To determine the height of the posts (except for the staircase front posts, which should be cut to the length indicated), make a mark on the house 7 1/4" down from the bottom edge of the ledger. Use a straight 2 × 4 and a level to extend this line across a post. Transfer this line to the remaining posts. Cut the posts off with a reciprocating saw or a handsaw and attach post-beam caps to the tops using 8d nails. Pour the railing post fittings using the same method.
Cut the beams from 2 × 10" lumber, adding several inches to each beam for final trimming. Position the beam boards (C) so the crowns face the same direction, and fasten them together with 10d galvanized nails spaced every 16".
Position beams C-1 and C-2 in their post-beam caps and attach them with nails. Mark and cut the angled end of beam C-3 by mitering it at 22-1/2°. Position the beam in the post caps.
Make a 22-1/2° miter cut at one end of beam C-4 to form a 45° corner with beam C-3. Leave the other end long for final trimming. Place beam C-4 in the post-beam caps. Fit the beams tightly together, fasten them with 3" deck screws, and attach them to the post caps with 8d nails.
Referring to the Framing Plan on page 308, cut rim joist F-1 to final length, and cut end joist E-1 generously long, to allow for final trimming.
Fasten one end of rim joist F-1 to the ledger with 16d galvanized nails. Rest end joist E-1 in place on beams C-1 and C-2. Fasten F-1 and E-1 together with deck screws. Use a framing square to finalize the location of E-1 on the beams. Mark the beams and trim them to length. Toenail E-1 in place on the beams.
Cut end joist E-2 to length. Install it by nailing it to the end of the ledger, checking for square, and toenailing it to the top of beam C-3. Trim the beam to length. Mark the outlines of the inner joists (D) on the ledger, beams, and rim joist F-1 (see Framing Plan, page 308), using a tape measure and a combination square.
Attach joist hangers to the ledger and rim joist F-1 with 1 1/2" joist hanger nails, using a scrap 2 × 8 as a spacer to achieve the correct spread for each hanger. Note: Spacing between the joists is irregular to accommodate the installation of railing posts.
Place the inside joists in the hangers on the ledger and on rim joist F-1, crown up, and attach them with 1 1/2" joist hanger nails. Be sure to use all the nail holes in the hangers. Toenail the joists to the beams and leave the joists long for final trimming.
Mark the final length of the inside joists by making a line across the tops of the joists from the end of end joist E-2. Check for square. Brace the inside joists by tacking a board across their edges for stability. Cut them to length with a circular saw.
Cut rim joist F-2 long to allow for final trimming, and nail into position with 16d galvanized nails.
To mark the remaining joists for trimming at a 45° angle, make a mark 139" from the 90° corner on end joist E-1. Make a second mark 139" from the other 90° corner along rim joist F-2. The distance between these two points should be at least 70". If necessary, move the line back until it measures 70". Regardless of the overall dimensions of your deck, this length will ensure adequate space for mounting the railing posts at the top of the stairway.
Mark the last three joists for cutting by snapping a chalk line between the marked points on end joist E-1 and rim joist F-2. Transfer the cut marks to the faces of the joists with a combination square, and cut the miters with a circular saw.
Measure, cut, and attach rim joist F-3 across the angle with deck screws.
Cut the railing posts (G) to size and notch the lower ends to fit around the rim joists (see Railing Detail, page 309). Note: Many modern codes prohibit notching railing posts for installation. Check your local code and adjust this design as necessary to attach unnotched posts to the rim joists or beams.
Clamp all but two of the posts together to lay out and cut 3/4 × 3 1/2" notches, or dadoes, for the horizontal rails. Note: The posts at the stairway are not notched for rails.
Cut the dadoes by making a series of parallel 3/4"-deep cuts within each 3 1/2" space, about 1/4" apart, with a circular saw. Knock out the waste wood between the cuts, using a hammer. Then, chisel smooth the bottom of each dado.
To locate the railing posts on the diagonal corner, find the centerline of rim joist F-3 and measure 18" in both directions. These points are the inner faces of the railing posts and the outer faces of the stringers. Drill 1/4" pilot holes through the railing posts into the rim joist, and secure the posts with lag screws.
To position the corner railing posts, measure 3" both ways from the outside corners of rim joist F-3. Predrill the posts, and use a ratchet wrench to attach them to the rim joists with lag screws.
Use the Framing Plan (page 308), and the Corner Post Detail (page 309), to locate the remaining railing posts.
If possible, buy decking boards that are long enough to span the deck.
Measure, mark, and cut the decking (H) to size, making notches to fit around the railing posts. Position the first board above the stairway, and attach it by driving a pair of deck screws into each joist.
Position the remaining decking boards so that the ends overhang the deck, leaving a 1/8" gap between the boards to allow for drainage.
Where more than one board is required to span the deck, cut the ends at 45° angles and make the joint at the center of a joist.
Snap a chalk line flush with the edge of the deck, and cut off the overhanging ends of the deck boards with a circular saw set for a 1 1/2"-deep cut.
Measure, mark, and cut the stairway nailer (I) to size and attach it to the rim joist with mending plates and deck screws (see Stairway Detail, page 309).
Measure, mark, and cut the face boards (J) to length, making 45° miter cuts at the right angle corners and 22-1/2° miter cuts at the stairway corners. Attach the face boards to the rim and end joists with pairs of deck screws at 2 ft. intervals.
Lay out and cut the stringers (K) to size, according to the Stairway Detail (page 309). Mark the rises and runs with a framing square. Cut the notches with a circular saw, using a reciprocating saw or handsaw to finish the corners.
Measure, mark, and cut the gussets (L) to length. Assemble the stairway framework by nailing the gussets in place between the outer stringers with 16d nails.
Position the framework against the deck, and attach with deck screws driven through the upper gusset into the face board and nailer. Position the stringers against the bottom stairway posts, drill pilot holes through the stringers into the posts, and attach them to the posts with 1/2 × 4" lag screws.
Measure, mark, and cut the treads (O) to length. For the bottom treads, use a piece of railing post scrap to trace a line for the notch. Then, cut the notch with a circular saw. Attach the treads to the stringers with deck screws.
Measure and cut to length the 10 ft. rails, each with one end mitered at 45°. Install the rails, using 1 5/8" deck screws. Miter one end of the long rails at 45°. Leave the other end long for final trimming. Clamp each long rail in place and use a straightedge to mark cut lines at the angled corner. Transfer this line to the face of each rail, using a combination square. Remove the rails and miter-cut the ends for the angled corners at 22-1/2°. Reposition the rails and attach them to the railing posts with 1 5/8" deck screws. Measure, mark, and cut the short rails to length with one end mitered at 22-1/2° and the other end cut square.
Fasten the ends of the short rails to the railing posts above the stairway with angle brackets. Use 5/8" galvanized screws to attach the brackets to the rails and 1 5/8" deck screws to attach them to the posts. Attach them to the notched post as well, using 1 5/8" deck screws.
Measure, mark, and cut the deck railing cap (Q), and install it with 3" deck screws.
Mark and cut the stairway posts to length. Measure, mark, and cut the stairway railing caps (see Stairway Detail, page 309). Place a cedar 2 × 6 on top of the stairway posts, mark the angles for the ends, and cut to length, allowing for a 1" overhang at the end of the stairway.
Install the stairway railing caps with 3" deck screws. To cut the stairway rails, hold each one tight against the bottom of the cap and mark the ends.
Cut the rails to length so that they fit tight between the posts. To install the rails, mark the positions of the rails on the posts and attach them with angle brackets, using 5/8" screws and 1 5/8" deck screws.
Expand your outdoor living space with unusual flair. The design of this attractive deck makes creative use of simple geometry to take advantage of the fact that the eye finds angles and unexpected shapes visually interesting. The look is jazzed up even more with vertical balusters and beefy horizontal rails, topped with interesting decorative finials. It’s a winning look all around.
The deck is also convenient. It’s been designed with a straight staircase, providing direct and simple access to the backyard. Though designed specifically for construction at medium height on level ground, the deck uses heavy-duty posts, beams, joists, and footings. It’s a durable deck that will definitely stand the test of time. It’s also an adaptable design that could easily be altered for installation at a higher level, or on a slope.
Supplies
12"-diameter footing forms (4)
J-bolts (4)
6 × 6" metal post anchors (4)
90° 2 × 10" joist hangers (22)
45° double 2 × 10" joist hangers (2)
3" galvanized deck screws
1 5/8" galvanized deck screws
3" masonry screws (4)
Joist hanger nails
16d galvanized casing nails
1/2 × 4" lag screws and washers (60)
1/2 × 5" carriage bolts, washers and nuts (22)
Silicone caulk (3 tubes)
Concrete as required
Elevation
Railing Detail
Stairway Detail
The ledger anchors the deck and establishes a reference point for building the deck square and level.
Draw a level outline on the siding to show where the ledger and the end joists will fit against the house. Install the ledger so that the surface of the decking boards will be 1" below the indoor floor level. This height difference prevents rainwater or melted snow from seeping into the house.
Cut out the siding along the outline with a circular saw. To prevent the blade from cutting the sheathing that lies underneath the siding, set the blade depth to the same thickness as the siding. Finish the cutout with a chisel, holding the beveled side in to ensure a straight cut.
Cut galvanized flashing to the length of the cutout, using metal snips. Slide the flashing up under the siding at the top of the cutout.
Measure and cut the ledger (A) from pressure-treated lumber. Center the ledger end to end in the cutout, with space at each end for the end joist.
Brace the ledger into position under the flashing. Tack the ledger into place with galvanized nails.
Drill pairs of 3/8" pilot holes at 16" intervals through the ledger and into the house header joist. Counterbore each pilot hole 1/2", using a 1 3/8" spade bit. Attach the ledger with lag screws and washers, using a ratchet wrench.
Apply a thick bead of silicone caulk between siding and flashing. Also seal lag screw heads and the cracks at the ends of the ledger.
To locate the footings, drop a plumb bob from the end of the ledger down to a level that’s comfortable for making measurements and stretching mason’s strings.
Measurements for the footing centerpoints are shown on the Framing Plan (page 316). Construct, position, and install temporary 2 × 4 batterboards.
Stretch three strings perpendicular to the house; one at each end of the ledger, and one at the centerline of the footing for the secondary beam, 80-1/4" from the right end of the ledger.
Make sure that the strings are square to the house by using the 3-4-5 triangle method. Measuring from the point where the string meets the house, make a mark on the house at 3 ft. Then measure out along the string and make a mark at 4 ft. When the string is truly perpendicular, the diagonal line connecting the two marked points will measure 5 ft. Adjust the string on the batterboard as needed.
Stretch the fourth string between batterboards, parallel to the house, at the centerline of the primary beam.
Measure along the parallel string and use tape to mark the three centerpoints of the footings for the primary beam.
To locate the footing for the secondary beam, use tape to mark a point on the middle perpendicular string that is 48-3/4" out from its intersection with the parallel string.
Transfer the locations to the ground by dropping a plumb bob from each tape mark and driving a stake into the ground at each point.
Remove the mason’s strings and dig holes for the footings, using a clamshell digger or power auger. Pour 2" to 3" of loose gravel into each hole for drainage.
Note: When measuring the footing size and depth, make sure you comply with your local building code, which may require flaring the base. Cut the footing forms to length using a reciprocating saw or handsaw, and insert them into the footing holes, leaving 2" of tube above ground level. Pack soil around the forms for support, and fill with concrete, tamping with a long stick or rod to eliminate any air gaps.
Screed the tops flush using a straight 2 × 4. Insert a J-bolt into the center of each footing, leaving 3/4" to 1" of thread exposed. Retie the mason’s strings and use the plumb bob to position the J-bolts at the exact center of each footing. Clean the bolt threads before the concrete sets.
To provide a reference line for orienting the post anchors so the posts will be aligned with each other, lay a long, straight 2 × 4 flat across the primary beam footings, parallel to the ledger. With one edge tight against the J-bolts, draw a line across the top of each footing.
To mark the post anchor position on the footing for the secondary beam, mark a line across the footing at a 45° angle to the primary beam.
Place a metal post anchor on each footing, centering it over the J-bolt and squaring it with the reference line. Thread a nut over each J-bolt and securely tighten the post anchors in place.
Estimate the height of each post, and cut the posts slightly long to allow for final trimming. Set the posts in the anchors and tack into place with one nail.
With a level as a guide, use braces and stakes to ensure that the posts are plumb.
Determine the top of the posts by extending a straight 2 × 4 from the bottom edge of the ledger and marking a line on the posts level with the bottom of the ledger.
Outline a 4-1/2 × 9 1/4" notch (see Post Detail, page 317) at the top of each of the primary-beam posts.
Remove the posts from the anchors, cut to finished height, and cut the notches using a circular saw and handsaw.
Reposition the posts with the notches facing away from the house, brace them plumb, and nail them securely to the post anchors.
We used 20 ft. boards for the primary beam. However, for reasons of cost or availability, you may need to use a smaller size. Check with your local building inspector regarding acceptable joining hardware and techniques.
Construct the primary beam from 2 × 10" boards. Position the primary beam boards (C) so the crowns face the same direction, and fasten together with 16d galvanized nails. Drill pairs of 3/8" holes through the beam at 24" intervals, and secure with carriage bolts, washers, and nuts.
Measure, mark, and cut the beam to length. Position the beam in the post notches, crown side up. Make sure the beam is square to the ledger by measuring the diagonals; adjust the beam position so the diagonal measurements are equal.
Drill two 3/8" pilot holes through each post into the beam. Fasten with lag screws and washers, using a ratchet wrench.
Measure, mark, and cut the post for the secondary beam slightly long to allow for final trimming. Install the post in the post anchor.
Locate and mark the points where the secondary beam butts against the primary beam. Run a straight 2 × 4 across the face of the post to the primary beam in both directions. Outline the ends of the secondary beam on the face of the primary beam, and install 45° 2 × 10 double joist hangers at each point.
Measure, mark, and cut secondary beam boards (D) to length, using a circular saw.
Install the boards one at a time, verifying that they are level and attaching them with deck screws.
Drill pilot holes through the assembled beam and into the post. Counter-bore the holes 1/2" deep with a 1 3/8" spade bit, and secure the secondary beam to the post with lag screws.
Fasten the secondary beam to the joist hangers with 10d galvanized joist hanger nails.
Measure and cut the end joists (E), leaving them several inches long for final trimming. Install by nailing into the ends of the ledger with 16d galvanized nails and toenailing to the top of the primary beam.
The joists are not all evenly spaced. Referring to the Framing Plan (page 316) use a combination square and draw the joist outlines on the face of the ledger and the top of the beams.
Install a joist hanger on the ledger at each location. Attach one flange of a hanger to one side of each outline, using joist hanger nails. Use a spacer cut from scrap 2 × 10" lumber to achieve the correct spread for each hanger, then fasten the remaining side flange with joist hanger nails. Remove the spacer and repeat the procedure to install the remaining joist hangers.
Measure, mark, and cut the joists (G), using a circular saw. Be sure to leave the joists long to accommodate final angled trimming. Place joists in hangers with crown side up and attach with nails. Align joists with the outlines on the top of the beam and toenail in place.
Snap chalk lines along the top edges of the joists (see Framing Plan, page 316) to mark the perimeter of the deck. All the angles are either 45° or 90°. Allow for the 1 1/2" thickness of the rim joists. Extend the cutoff lines to the faces of the joists, and make the cuts using a circular saw.
Referring to the Framing Plan and confirming the actual dimensions of your deck, measure, mark, and cut the rim joists (F) to size and attach them to the joists with deck screws.
Locate railing posts in the corners of the deck, then center the intermediate posts between them (see Framing Plan, page 316).
Cut railing posts (H) to length (see Railing Detail, page 317). Cut a 60° pyramid on the top of each post, and rout a 1/2 × 1/2" groove on all four sides 1" below the pyramid.
To install the railing posts, clamp them one at a time into position, and drill 1/4" pilot holes through the rim joist into the post. Counterbore the holes 1/2" using a 1" spade bit, and secure the posts to the rim joists with lag screws.
Determine the location of the concrete pad. Add 6" in each direction, and excavate approximately 8" deep.
Lay and tamp a 4" base of compactible gravel.
Build a form from 2 × 6 lumber, and align the inside of the form with the outside rim joists as shown in the Framing Plan, page 316. Level the form at 56" below the finished surface of the deck, to accommodate eight 7" stairway rises. Stake the form into place.
Fill the form with concrete, screed with a straight 2 × 4, and let the concrete set up overnight. Note: Most building codes now prohibit securing a deck staircase to a solid concrete pad. You must check with your local building department to ensure your deck staircase adheres to prevailing standards and codes.
Lay out the stringers (I), according to the Stairway Detail, page 317. Notch the center stringer at the top and bottom to fit around the gussets. Mark the rises and runs with a framing square. Cut the notches with a circular saw, using a reciprocating saw or handsaw to finish the corners.
Measure, mark, and cut the gussets (J) to length. Assemble the stairway framework by nailing the gussets in place between the outer stringers with 16d nails. Turn the framework upside down and attach the center stringer by nailing through the gussets.
Position the stairway framework against the deck rim joist, and attach with deck screws driven through the top gusset into the rim joist. Drill pilot holes through the bottom gusset into the concrete pad and attach with masonry screws.
Cut the stair railing posts (K) to length. Shape the top ends. Install the posts by clamping them into place against the stringers, drilling pilot holes through the stringers into the posts, and attaching with lag screws and washers.
Measure and cut the treads (L) to length, using a circular saw. The bottom treads are notched to fit around the posts.
If possible, buy decking (M) long enough to span the deck. When joints between deck boards are necessary, center them above joists so the ends of both boards are supported.
Position the first deck board along the outer 45° rim joist, and mark the railing post locations. Cut notches for the railing posts, using a circular saw, handsaw, and chisel. Attach the board by driving two deck screws into each joist.
Cut and attach the remaining deck boards, leaving a 1/8" gap between the boards for drainage.
The railing for this deck is assembled in sections and then installed. The balusters are first fastened between the inner rails, then the baluster assembly is cut to exact length and attached to the outer rails.
Verify the measurements between your railing posts. Measure, mark, and cut the top and bottom rails (N) to length.
Install the bottom rails by drilling angled 1/8" pilot holes into the posts at the ends, and attaching with deck screws. Note: Where the railings meet the posts at a 45° angle, you’ll need to notch the ends to fit.
Measure, mark, and cut the top and bottom inner rails (O), leaving them several inches long for final trimming.
Measure, mark, and cut the deck balusters (P) to length.
Assemble each railing section by positioning the balusters between the top and bottom inner rails, drilling 1/8" pilot holes, and attaching them with deck screws. Trim the section to final length with an equal space at each end.
Position the baluster assembly on the bottom rail and nail in place.
Position the top rail above the baluster assembly, drill pilot holes through the top inner rail into the top rail, and attach with deck screws from below.
To determine the angle for the ends of the stairway rails and balusters, as well as the length of the inner and outer stairway rails, hold a straight 2 × 4 across one pair of stairway posts. With the top edge of the 2 × 4 crossing each post at the routed groove, mark the angle on the back of the board. Note: The angle will be approximately 32°, but you’ll get the best fit by marking it from your actual railing posts.
Measure, mark, and cut the top and bottom rails to length, with the ends angled to fit against the posts. Install the bottom rails.
Cut inner rails and balusters to size with mitered ends.
Build the stairway railing assemblies using the same procedures as used for the deck railing assemblies, taking care that the space between balusters is 4" or less.
Install the stairway railing assemblies by positioning them on the bottom rails and nailing with 6d casing nails.
Install the stairway top rails by positioning them above the railing assemblies, drilling pilot holes through the top inner rails, and driving deck screws from below.
A freestanding platform deck is a low-maintenance option for creating an outdoor floor. Because it can be constructed virtually anywhere, in almost any size, a platform deck works in nearly any landscape. The wood can be left natural, stained, or painted to blend with your house and other landscape elements.
You’ll be able to build this deck over a single weekend. It uses lumber in standard lengths, so you won’t need to do a lot of cutting. In addition, this deck uses precast concrete footings rather than poured footings. These precast footings are available at home improvement centers and lumberyards.
This 12 × 12-ft. deck rests on a 10 × 10-ft. base formed by 18 concrete footings arranged in three rows of six footings each. Joists are secured in slots in the tops of the footings, simplifying the building process.
Framing Plan
Construction Materials
Precast concrete footings (18)
12-ft. 2 × 6s (38)
2 lbs. galvanized 3" deck screws
For optional railing:
42-in. 2 × 2s (75)
12-ft. 2 × 6s (4)
Measure a 10 × 10-ft. area for the deck foundation, and mark the corners with stakes.
Position a footing at each corner, then measure from corner to corner, from the center of each footing. Adjust until the diagonal measurements are equal, which means the footings are square.
Place a 2 × 6 across the corner footings for the back row, setting it in the center slots. Check this joist with a level, then add or remove soil beneath footings as necessary to level it.
Center a footing between these corner footings.
Use a level to recheck the joist, then add or remove soil beneath the center footing, if necessary. Remove the joist.
Repeat the process to set and level the footings for the front row.
Position the remaining 12 footings at equal intervals, aligned in three rows. Position a 2 × 6 from the front row of footings to the back, and adjust soil as necessary to bring the interior footings into alignment with the front and back rows.
Seal the ends of each 2 × 6 with wood sealer/ protectant and let them dry completely.
Center a 12-ft. joist across each row of footings. Using a level, check the joists once again and carefully adjust the footings if necessary.
Line up a 2 × 6 flush against the ends of the joists along the left side of the deck, with the ends extending equally past the front and back joists.
Attach the side joist by driving a pair of deck screws into each joist.
Repeat this process to install the right side joist.
At the front of the deck, position a 2 × 6 rim joist flush between the ends of the side joists, forming a butt joint on each end.
Attach the rim joist to the side joists by driving a pair of deck screws through the faces of the side joists, into the ends of the rim joist.
Repeat to install the other rim joist.
Measure and cut six 2 × 6 sleepers to fit between the front and back joists and the rim joists. Seal the cut ends with wood sealer/protectant and let them dry completely.
Position one sleeper in each row of footings, between the first joist and the rim joist. Attach each sleeper by driving a pair of galvanized deck screws through each of the joists and into the sleeper.
Once the framing is complete, measure the diagonals from corner to corner. Compare the measurements to see if they are equal.
Adjust the framing as necessary by pushing it into alignment. Have someone help you hold one side of the framework while you push against the other.
Seal the 2 × 6 decking boards with wood sealer/ protectant and let them dry. Seal all exposed framing members as well.
Lay a 2 × 6 over the surface of the deck, perpendicular to the joists and flush with the rim joist. Secure this board with deck screws.
Repeat to install the rest of the decking. Use a framing square to set a 1/8" space between boards. Rip cut the last decking board if needed.
This multilevel deck is ideal where you need access from different areas and levels of your home. The size and shape also provide many functional spaces for entertaining, privacy, or relaxation, as well as unobtrusive storage areas for recreational accessories.
The lower deck in this plan has been built around a patio. If you want this as a deck area instead, simply extend the lower ledger board across the house and run joists between the ledger and the center beam. You can remove the spa area from the plans and adjust the shape of the lower deck if you wish, too.
With some modification, this design also can help you make use of an otherwise unusable steep slope. However, you may need to eliminate or reduce the storage and small deck area underneath the landing. Some excavation of the existing slope area might also be required.
Cutaway View: Lower Deck & Tub
Supplies
2 × 6" metal joist hangers (138)
2 × 6" double metal joist hangers (2)
6 × 6" metal post anchors (28)
16d galvanized nails (3 1/2", 25 lbs.)
10d galvanized nails (3", 30 lbs.)
3" galvanized screws (15 lbs.)
60 lb. dry concrete in bags (62)
1/2 × 6" galvanized carriage bolts, washers, and nuts (26)
1/2 × 4" galvanized lag screws (26)
1/2 × 6" galvanized lag screws (12)
1/2 × 4" galvanized expansion bolts (8)
Weather-resistant hinges* (4)
Weather-resistant door latch* (2)
Metal ledger flashing (34 ft.)
Decorative post cap* (19)
*optional
Front Elevation
Upper Stair Detail
Draw a level outline on the siding in both locations to show where the ledgers and the end joists will fit against the house (See the Lower Deck Framing Plan and Upper Deck Framing Plan, pages 331 and 332). Position the top edge of each ledger so that the surface of the decking boards will be 1" below the indoor floor level. This height difference prevents rainwater or melted snow from seeping into the house.
Cut out the siding along the outline with a circular saw. To keep the blade from cutting too deeply into the sheathing underneath the siding, set the blade depth the same thickness as the siding. Finish the corners of the cutouts with a hammer and chisel, holding the beveled side in to ensure a straight cut.
Install new building felt over the existing felt exposed by siding removal. Cut galvanized flashing to the length of each cutout using metal snips, and slide it up under the siding.
Measure and cut the ledgers to length from pressure-treated 2 × 6 lumber. Center the ledgers in the cutouts, underneath the flashing, with space at the ends for the end joists. Brace ledgers in place, fastening them temporarily to the house with 3" deck screws.
Drill pairs of 3/8" pilot holes through the ledger and sheathing and into the house header joist at 16" intervals. Counterbore each pilot hole 1/2" deep, using a 1 3/8" spade bit. Attach the ledgers to the wall with 1/2 × 4" lag screws and washers, using an impact driver or a ratchet wrench.
Apply a thick bead of silicone caulk between the siding and the flashing. Also seal the lag screw heads and any gaps between the wall and the ledgers.
Referring to the Post Location Plan on page 333, stretch mason’s strings across the site, using 2 × 4 batterboards. Check the mason’s strings for square, using the 3-4-5 triangle method. Adjust as necessary until they are square. Measure along the strings to locate the centerpoints of the footings. Mark the locations with tape.
Drop a plumb bob at the tape locations and drive stakes into the ground to mark the centerpoints of the footings. Remove the mason’s strings and dig holes for the footings, using a clamshell digger or power auger. Make certain the hole sizes and depths comply with your local building code, which may require flaring the footings at their base.
Pour 2" to 3" of loose gravel into each hole for drainage. Cut the footing tube forms to length, long enough so they will extend 2" above grade, using a reciprocating saw or handsaw. Insert the forms into the holes and backfill with soil. Lay out and mark the location for a concrete pad within the hexagonal spa area (see Lower Deck Framing Plan, page 331). Excavate and build forms for the pad.
Fill the tube forms with concrete in stages, tamping the concrete at each stage with a long stick to eliminate any air pockets. Screed the tops flush with a flat 2 × 4. Retie the mason’s strings and drop a plumb bob to establish centerpoint of the footing. Insert a J-bolt into each footing, leaving 3/4" to 1" of thread exposed. Clean the bolt threads before the concrete sets.
Pour concrete into the spa pad form and tamp to remove air pockets. Screed the top flush with the form (no other finishing techniques are necessary for this pad) and allow the pad to cure. Note: Some codes do not allow securing a portion of a deck connected to stairs to a concrete pad. Check your local building code.
Lay a long, straight 2 × 4 flat across pairs of footings. With one edge tight against the J-bolts, draw a reference line across each footing. Do this in both directions for pairs of footings where necessary.
Place a metal post anchor on each footing, center it over the J-bolt, and square it with the reference line. Thread a nut over each J-bolt and tighten each of the post anchors in place.
Cut deck support posts A through E to their approximate length, adding several inches for final trimming (see Elevation, page 332, and Upper Stair Detail, page 334). Place the posts in the anchors and tack them into place with one nail each.
With a level as a guide, plumb the posts, using braces and stakes to hold posts B through E plumb. Once the posts are plumb, finish nailing them to the anchors.
Using a string, water, or laser level, mark the top edge of the lower deck rim joists and center beam locations on posts A and at the footing ends of appropriate posts B through E (see Lower Deck Framing Plan, page 331). Make a mark level with the top edge of the lower ledger.
Mark posts E for the upper deck rim joists, using the top edge of the upper ledger as the reference.
Measure, cut, and install rim joists for the upper deck from pressure-treated 2 × 6 lumber. Do this one piece at a time to ensure accurate measuring. Cut 45° miters at the ends of the pieces that meet posts at the 45° corners. Attach rim joists to the post faces, using 3 1/2" deck screws.
Measure, cut, and install face boards from pressure-treated 2 × 8 lumber. Do this one piece at a time, as with the rim joists. Cut 22-1/2° miters at the ends of the pieces that meet at the 45° corners. Attach face board pieces that fit flush with the post faces using 1/2 × 6" carriage bolts, washers, and nuts. Attach pieces that don’t fit flush with the post faces at the 45° corners with 1/2 × 4" lag screws and washers. Make sure to stagger the bolt and/or screw locations on posts where two pieces attach. Attach the face boards to the rim joists with pairs of 3" deck screws driven at 24" intervals.
Build the center beam from doubled 2 × 8 pressure-treated lumber. Measure, cut, and attach it to the posts with 1/2 × 8" carriage bolts, washers, and nuts. Cut 45° miters in the ends of the pieces that will meet the rim joist face at a non-perpendicular junction.
Measure, cut, and install the rim joists and face boards for the lower deck in the same manner you followed for the upper deck. However, cut 45° miters in the ends of the pieces that will meet the center beam face at a non-perpendicular junction. Cut the tops of posts A flush with the top edges of the rim joists and center beam using a reciprocating saw.
Measure 42" up from the top of the lower deck rim joists attached to posts B and D and mark the posts (see Upper Stair Detail, page 334).
Measure, cut, and attach the landing rim joists, aligning their top edges with the 42" marks, and add the face boards in the same manner you followed for the lower and upper decks. Cut the tops of posts B flush with the top edges of the rim joists.
Measure and mark the outlines for joist locations spaced 16" on center on the ledger and rim joists of the upper deck (see Upper Deck Framing Plan, page 332). The spacing of the joists measured along the 45° angled rim joist will be 22-5/8" on-center. Measure and mark the outlines for joist locations for the stair landing.
Measure and mark the outlines for joist locations spaced 16" on center on the ledger, rim joists, and center beam of the lower deck (see Lower Deck Framing Plan, page 331). The joist spacing will be 22-5/8" on-center measured on the 45° angled rim joist.
Attach the joist hangers to the ledgers, rim joists, and center beam with 10d joist hanger nails, using a scrap 2 × 6 as a spacer to maintain the correct spread for each hanger. Use 45° joist hangers of the proper direction where joists meet the angled rim joists.
Measure, mark, and cut 2 × 6 pressure-treated lumber for the joists.
Insert the joists into the hangers with crown side up, and attach at both ends with 10d joist hanger nails. Be sure to drive a nail in every hole in the hangers. Add cross bracing for the joists in the upper deck as necessary.
Cut railing posts F and G to their approximate length, adding several inches for final trimming.
Clamp each post in place to the inner face of the rim joist. Drill pilot holes for two 1/2 × 6" carriage bolts through the rim joist and the post. Counterbore the holes in the rim joist 1/2"-deep, using a 1 3/8" spade bit. Attach the posts to the rim joists with the carriage bolts, washers, and nuts.
Position a deck board along the outer 45° rim joist on the upper deck, overhanging the rim joists at both ends. Mark the railing post locations.
Cut notches for the railing posts, using a jigsaw. Test fit the board: its leading edge should be flush with the front face of the 45° rim joist. Adjust as necessary. Attach the board by driving two deck screws into each joist.
Cut and attach the remaining deck boards, again letting ends overhang the rim joists. Leave a 1/8" gap between the boards for drainage. Cut notches for railing posts.
Mark and snap lines across the overhanging board ends that are aligned with the outer faces of the rim joists. Set the depth of the circular saw blade 1/8" deeper than the thickness of the decking and cut along the line, and complete cuts at corners or walls with a jigsaw, and a hammer and sharp chisel. Remove all braces and stakes supporting posts. Install the decking on the stair landing and lower deck following the same methods.
Cut the stair stringers for the upper stairs to length and use a framing square to mark the rise and run for each step. (See Upper Stair Detail, page 334. If you need to alter the plans to accommodate the height of your deck, see pages 146 to 149.) Cut the notches and the angles at the ends of the stringers with a circular saw, then complete the cuts at corners with a jigsaw.
Measure and cut a stair hanger and attach it to the posts E at the stair location with deck screws. Its top edge should butt against the bottom edge of the rim joist.
Position the middle stringer so the bottom end is flat against the middle of the stair landing and the upper end is against the stair hanger. Mark where the front edge of the stringer meets the landing. Measure and cut a 2 × 6 kick plate to fit between the outer stringers. Align the front edge of the kick plate with the mark so the board is parallel to the near edge of the landing. Fasten with deck screws. Cut a notch for the 2 × 6 kick plate in the middle stringer.
Position each outer stringer against one end of the kick plate and against the stair hanger. Drive a screw through each stringer into the kick plate. Square each stringer to the hanger, using a framing square, and mark its position. Attach the upper ends of the stringers to the hanger with angle brackets. Position the middle stringer evenly between the outer stringers. Attach it to the stair hanger with a skewable joist hanger, and to the kick plate using deck screws driven at an angle.
Measure and cut riser boards from pressure treated 1 × 8 lumber. Attach the riser boards to the stringers with two deck screws per stringer. Drill pilot holes for the screws at the ends of the boards.
Measure and cut two 2 × 6 stair treads for each step. Their ends should be flush with the outer faces of the stringers. Attach the treads with two deck screws per tread at each stringer, leaving a 1/8" gap between treads. The back tread should touch the riser on each step.
Measure, layout, cut, and install the lower stairs following the same methods.
For railing installation, refer to the Upper Stair Detail on page 334. For additional railing installation techniques, refer to pages 161 to 191.
Install the spa on the pad and connect it to the utilities following the manufacturer’s instructions. Have a professional do the installation if you are not comfortable working on plumbing, wiring, or gas systems.
After the spa is installed, follow the methods on pages 266 to 269 for enclosing the framing. You can use the same basic techniques to create storage enclosures beneath the stairway landings.
Gentle, sweeping curves define this delightful design. Enclosed wraparound steps give a feeling of solidity to the deck. Easily adapted to other dimensions, this plan offers a great deal of functional appeal without a large outlay of time or money. The deck pattern is a simple “flying V” design that also adds enormous visual interest.
Stair railings should not be necessary with the height and step design of this plan, but check with your local building inspector. A simple metal railing could be installed without affecting the visual allure of the design. A built-in planter and matching bench provide both increased function and greater aesthetic appeal to what is a very simple deck design.
Supplies
10"-diameter footing forms (9)
3" direct bearing hardware (6)
2 × 8" double joist hangers (4)
2 × 8" joist hangers (72)
2-1/2" decking screws
Joist hanger nails
16d galvanized nails
12d galvanized casing nails
1/2 × 4" carriage bolts, washers, and nuts (12)
1/2 × 4" lag screws (22)
Exterior silicone caulk (3 tubes)
Concrete as required
A ledger isn’t used for this deck plan. If you alter these plans to include a ledger board, see pages 62 to 69 for ledger installation methods.
Mark the deck location on the wall of the house (see Framing Plan), then stretch mason’s strings across the site, using 2 × 4 batterboards. Temporarily attach batterboards to the wall with deck screws. Check the mason’s strings for square, using the 3-4-5 triangle method. Adjust as necessary until they are square. Measure along the strings to locate the centerpoints of the footings and mark each with tape. Note: Allow yourself room to dig the footings at the house wall; the centerpoint of the posts can be up to 16" from the end of the beam.
Drop a plumb bob at the tape locations and drive stakes into the ground to mark the centerpoints of the footings.
Remove the mason’s strings and dig holes for the footings, using a clamshell digger or power auger. Make certain the hole sizes and depths comply with your local building code, which may require flaring the footings at their base.
Pour 2" to 3" of loose gravel into each hole for drainage.
Cut the footing tube forms to length, so they extend 2" above grade, using a reciprocating saw or handsaw. Insert the forms into the holes and backfill with soil.
Fill the tube forms with concrete in stages, tamping the concrete at each stage with a long stick to eliminate any air pockets. Screed the tops flush with a flat 2 × 4.
Retie the mason’s strings and drop a plumb bob to establish the centerpoint of the footing. Insert a J-bolt into each footing, leaving 3/4" to 1" of thread exposed. Clean the bolt threads before the concrete sets. Note: Another option is to install threaded rods with epoxy after the concrete has cured.
Start by laying a long straight 2 × 4 flat across pairs of footings. With one edge tight against the J-bolts, draw a reference line across each footing. Do this in both directions for pairs of footings where necessary.
Place a metal post anchor on each footing, center it over the J-bolt, and square it with the reference line. Thread a nut over each J-bolt and tighten each of the post anchors in place.
Cut 30"-long posts from pressure-treated 6 × 6 lumber. Place each post in a post anchor and tack it in place with one nail. With a level as a guide, plumb the posts, using braces and stakes to hold them in place. Finish nailing the posts to the anchor.
At the centermost post along the wall, measure down from the door, allowing 7 1/4" for the joists, 1 1/2" for the decking, and 1" between the decking surface and the interior floor, then mark the post at this measurement.
Use a string, water, or laser level to transfer this mark to the other posts. Each mark will be level with the top edge of the beams.
Measure and cut two pressure-treated 2 × 8s to length for each of the three beams (see Framing Plan, page 340). Place their faces together so that their crown sides are aligned and attach them together with pairs of galvanized nails or deck screws driven in a zig-zag pattern every 12".
Position the crown (top) edge of each beam against the level marks on the appropriate posts and clamp it in place. Mark and then notch the posts 3" deep for the beams. Drill pairs of holes for 1/2 × 6" carriage bolts through the beam and post at each location. Attach each beam to the posts with the carriage bolts, washers, and nuts, inserting the bolts through the beam.
Measure and cut the two outer rim joists. Provide a 1 × 2" space between one end of each joist and the wall and a 2" extension beyond the outer corner post at the other end. Position their bottom edges so they are level with the top edges of the beams and attach them to the posts with 3" deck screws.
Measure, cut, and attach the wall-side rim joist between the ends of the outer rim joists. Align the wall-side rim joist face that is nearest the wall so it is flush with the ends of the outer joists. Drill pilot holes through the outer rim joist and drive deck screws through into the wall-side rim joist ends.
Cut and install the inner joist between the outer rim joists on the front faces of the outer corner posts. Attach it to the posts with deck screws and to the beams with rafter ties.
Measure and cut a pressure-treated 1 × 8 a few inches longer than needed to span from the outer rim joist to the centerpoint of the middle post at the front of the deck. This will be the first piece of the curved rim joist. Cut numerous 1/2"-deep kerfs along the back width of this board. See page 120 for more information on cutting kerfs.
Place one end of the board in the intersection of an outer rim joist and inner joist at an outer corner post, with the kerfed face against the inner joist and its top edge flush with the top edges of the joists. Drill pilot holes and drive 3" deck screws through the end of the board into the joist and post.
Bend the other end of the board until it meets the face of the center post and attach it to the post with deck screws driven 1" from the centerpoint. Make sure the bottom edge of the curved joist is level with the top edge of the beam. Mark a straight cut line at the centerpoint of the post on the curved joist, using a speed square. Cut the board with a circular saw with its blade set 1/8" deeper than the thickness of the board.
Measure, cut, and kerf another 1 × 8 a few inches longer than needed to complete the span. Attach one end in the intersection of the other outer rim joist and corner post. Bend and clamp the board into position. Mark a cutting line for the board to meet the other curved joist at the center post. Cut it with the circular saw, drill pilot holes, and drive deck screws to attach it to the post before removing the clamps.
Measure, cut, and kerf another pair of 1 × 8s. Clamp them to the first layer, staggering the joints so they do not fall on the center post and aligning the ends so they protrude past the rim joists. Drill pilot holes and fasten with deck screws every 12" and at post locations, then trim the ends of the rim joists flush with the outer face of the curved rim joist, using a reciprocating saw.
Measure, cut, and install the remaining inner joists with 16" on-center spacing beginning at the wall side of the deck.
Select a 2 × 8 for the inner joist closest to the curved rim joist that is about 12" longer than necessary. Position it so its ends overlap the curved rim joist with its inner face aligned with the adjacent posts. Mark the profile of the inner face of the curved rim joist at each end of the inner joist. Cut the inner joist at these marks with a reciprocating saw, then install it with deck screws driven through it and into the curved rim joist.
Cut and install 2 × 8 blocking at the midpoints of the joist spans to provide support for the diagonal decking. Also install blocking between the curved rim joist and adjacent joists as necessary to help support the curved profile. Cut the tops of the posts flush with the top edges of the joists. Remove all braces and stakes supporting posts.
Cut the stair stringers to length from pressure-treated 2 × 12 lumber and use a framing square to mark the rise and run for each step. Cut the notches and the angles at the end of the stringers with a circular saw, then use a jigsaw to complete the corners.
Attach the side stair stringers to the joist ends. Attach the stringers for the curved stair to the blocking between the inner joists and the curved rim joist. Install additional blocking as necessary. Rip 1/4"-thick plywood sheets into 2 × 8-ft.-long pieces and trace the profile of the curved rim joist onto them. Cut out this profile, using a jigsaw, and use the plywood templates to mark the inside curve for the inner tread of the top step onto 10-ft.-long pieces of 2 × 12 lumber. Cut a 2"-wide piece of 2 × 6 lumber and use it as a spacer to mark the outside curve for the inner tread. Guide one end of the spacer along the inside curve line while holding a pencil point at the other end.
Cut the curved inner tread pieces using a jigsaw. Use the outside curved edge of the inner tread to mark the inside curve of the outer tread for the top step. Use the spacer to mark the outside edge, then cut the treads using a jigsaw.
Use the outside curved edge of the outer tread for the top step to mark the inside curved edge on the inner tread of the bottom step. Repeat the process used to mark and cut the top step treads to complete the bottom step treads.
Install the curved treads, drilling pilot holes and using deck screws. Make sure joints between tread pieces are supported by stringers.
Measure and cut the side treads from 2 × 6 lumber, and attach them to the side stair stringers.
Cut a 45° angle at the end of a deck board and position it with the long point 1/4" from the wall and centered on the midpoint blocking. The other end should overhang the rim joists at the opposite corner. Attach the board by driving two deck screws into each joist.
Cut and attach the rest of the deck boards on this side of the deck.
Cut and attach the deck boards for the other side of the deck, again letting ends overhang the rim joists. Trim the ends of the deck boards.
Mark and snap chalk lines across the overhanging board. Set the depth of the circular saw blade 1/8" deeper than the thickness of the decking and cut along the lines. Complete the cuts at the wall with a jigsaw, and a hammer and sharp chisel.
Use the plywood templates you cut for the stair installation to mark the curve on the ends of the decking boards overhanging the curved rim joist and trim, using a jigsaw.