Flooring that is sanded, stained and sealed before installation, usually done at the flooring factory. Factory-finished flooring that only requires installation. In many cases this can provide a harder, better- protected surface. Several coats of urethane are sprayed on the boards and then they are UV dried for a very durable finish. Pre-finished floors offer a wider variety of wood species and save hours of labor and cleanup. They also may be screened and recoated to rejuvenate the finish and revitalize the floor’s natural beauty.