Wood floors might need only polishing or, at most, sanding-down and sealing with a polyurethane or tung oil for a brand-new look. If your wood floors are in such poor condition that they can't be revived by sanding, staining or bleaching, they might still be rescued by paint that can cover a multitude of pits and blemishes. An oil-based primer and finish coat will make for the most durable, longest-lasting finish. And that's the On The House tip for today.