We are going to paint a small bathroom. Over the years the Sheetrock looks as if water has been exposed to the walls.
Is there a moisture barrier that you can put on Sheetrock before painting?
I'm not sure if there's a moisture barrier specifically that goes in between the paint and the wall of the bathroom, but there are paints that are made to withstand high humidity. Also, semi-gloss seems to be the finish of choice because it is better at resisting stains and moisture which are common problems for bathrooms.