Most professionals and polyurethane manufacturers endorse 3 coats of drinking water-dependent polyurethane at least. Some people may perhaps prefer to use four coats, but this could lead to lots of sanding and prolonged curing times. Resin consolation floors also provide distinctive noise-lowering properties, which may be elevated up to >21Db https://mcgepoxycoatings.com/epoxy-floor-paint-preparation/