Just painted a half bath and it instantly cracked, little tiny box cracks. What would have caused this and what can I do?
Something is on the wall. Could be soap residue, hair spray, etc. This is causing the crackling effect. Washing before painting would have taken care of it but now it is too late for that. You will need to get some shellac primer and prime the damaged area(s) then repaint or touch-up these areas.