I have an interior bedroom wall that is not holding paint. I did have condensation on the wall from ice dams in the past, which stopped when I had the roof replaced. I patched the drywall after that, but the paint continues to peel. I have had two people check it out who supposedly did drywall work, they patched, primed & painted--still peeling! I suspect water damage to the sheetrock; who would be able to remedy this problem?