Bought this home that has archways leading into my living room. It had been previously painted. Wanted to repaint. After applying the paint I noticed that it had bubbles. I touched it and the paint just came off. It is peeling. It appears that the archway is made up of some kind of plastic. It has some form of spackling over it, has a gritty, sandy feel. How do I fix this problem, so I can paint it?
Paint a plastic archway in my home.