Sanding your hardwood floors takes three sessions with progressively lighter grit sandpaper. To begin, use a coarse 30-40 grit, then a medium 50-60 grit and finally a fine 80-100 grit. For flat floors, use a random orbital sander. This sander is easier to handle than a drum sander and eliminates directional scratches.
But stains caused by pet urine often penetrate so deep into the wood that you just can't sand them out. Bleach formulated for wood floors may be worth a try, but .
When a wood floor loses its luster, the usual solution is to sand it down to raw wood and completely refinish it. But often, that's the wrong solution. Refinishing .
If your hardwood floors have surface scratches, refinishing them can make them look good as new. Visit This Old House to learn how to buff and refinish floors.
Sand Floor. Sand the floor completely and vacuum thoroughly to remove all sawdust.. floor to raise the grain; this will cause the wood to better accept the stain.