I put down a coat of oil based primer for glossy surfaces in my bathroom about two months ago. Let it dry good and have been washing it with no signs of the paint coming off. Am off to the store now to get acrylix latex to put on top of it. Does anyone know if a Polyurethane coat on top will help keep it sealed better. It's a half bath and not much moisture gets in there. Wish me luck as the guy in Home Depot said this couldn't be done. If al fails, I'll put a indoor/outdoor rug on the thing. Anything is better than that dirty old ceramic tile.