I was so pleased to get our floors sanded and resealed. When my brother-in-law decided to do-it-himself the wood turned out all wavy because he really did not know what he was doing. Now they have to tear out their old floos and reinstall all new hardwood. It will end up costing them 3x what it would have had they used Professional Floors of Saint Louis. Thanks again for a professional and timely install.