If hardwood floors have a surface finish, recoating can help maintain the original shine. It is a simple process: the floor is thoroughly cleaned and buffed, and a fresh coat of finish is applied. By applying a new layer of finish, the floor is protected from deep scratches and unnecessary damage. Recoating is only successful if the finish has not worn through, so it is smart to check floors every four to six months. If there is dirt buildup or discoloration, recoating can be applied to these areas in order to prevent long-term damage. A hardwood floor with a penetrating sealer or wax finish can be buffed to restore shine, but a new finish cannot be applied without sanding. Consult flooring professionals for specific instructions on each type of floor.