Despite all your conscientious sweeping, mopping, vacuuming, and buffing, you can’t expect hardwood floors to gleam quite like when they were first installed. You can, however, extend their life—and appreciate their beauty—for years to come. Rule number one: Promptly clean up spills and anything else undesirable afoot.
Supplies
The proper treatment for common problems (see page 61) depends on the flooring’s finish, if any. Polyurethane, a hard film coating, is more durable—and harder to repair—than the age-old wax application. If you aren’t sure, do a spot test in a clean, inconspicuous area, preferably near a window: Rub some mineral spirits (or paint thinner) with a white cloth over the area; if the cloth picks up a glaze, or stains amber or brown, odds are the floor is waxed. If not, the coating is likely polyurethane, which can be water- or oil-based. To test, apply a small amount of the solvent Xylene, let sit for about 10 seconds, and wipe away; if floor is sticky, the finish is water-based; if nothing happens, it is oil.
When the treatments (see opposite) fail to work on polyurethane finishes, you can tackle blemishes with the following three steps.
Note: If the floor was treated with a wood stain, you will need to restain the sanded area before applying the finish.
Your best course of action is to keep those nicks and scratches from happening in the first place.