Revitalize your existing worn or discolored hardwood stairs by sanding and refinishing. The finish on your hardwood floors may be showing excess usage in some areas or perhaps marks and scratches. Sanding a thin layer off the surface should eliminate these imperfections. Then a new multi-layer finish can be applied to give years of lasting beauty. Of course, a stain can be added before the top coat finish if you wish to create a particular color to fit your desired decorating scheme.