The floor would require a radical cleaning, usually with a degreaser. Then the prevailing coating will need a light sanding to get rid of any gloss or varnish. Paint is not going to persist with a slick or shiny surface. With access to 1M+ purchaser evaluations and The professionals’ work http://josuerofxn.ivasdesign.com/11982005/about-cabinet-doors-ready-to-paint