How to prime/paint problem walls
Hello all, have a question about priming/painting problem surfaces - didnt get a huge response over on paint forum so I thought I would post here - it is old house specific. The problem surfaces in question are: calcimine, old oil paint over plaster (I think this is the first layer as it didn't wash off like the calcimine does), new plaster (repairs) some drywall patches with skim coat. And maybe about half of my walls are just the usual modern latex. All of these surfaces are in my house! Do I need multiple primers or what? I noticed that some of the painting I did a few years back over the oldest layers (oil and/or calcimine) are now starting to peel. THANKS in advance to any and all input.