I have to paint a brick house. The brick has several layers of old paint currently on it. At least one of them is lead-based; I don't know what the others are.
I'll scrape before I paint, but most of the paint is well attached, and I don't expect to have more than about 20 percent of the surface down to bare brick after scrapping.
Given this, I'm wondering if I should use regular, general-purpose latex paint for the new coat, or a masonry paint. The masonry paint should attach better and last longer where it is applied over bare brick, but will it under-perform in areas where it gets applied over existing paint?
I am going to spray the paint with an airless sprayer, in case that matters.