I have a real problem. A contractor applied latex over oil base paint on interior doors and trim. The latex did not adhere and can be stripped off easily with a finger nail. He does not want to strip off the latex and repaint. He wants to sand and paint over with some other type of paint. I believe that the bond will never be any stronger than the present one. Must the latex paint be stripped off before repainting?
Latex Paint Applied Over Oil Base Paint Without Priming