Can someone please help! My parents had their walls plastered in the living room approx 3 weeks ago - they painted the walls after 5 days as recommended by the plasterer. The paint used was Crown Solo but after 7 coast the patches would not cover up. After a few weeks my parents decided to have the wall replastered by another plasterer, again they painted it after a few days but the patches are still visible in the same place. My father has tried saning and repainting but still cannot get rid of the patches. Please can someone advise on the best way forward before they spend waste any more money! Many thanks