My house was built in 1983. I put one coat of acrylic primer on the bathroom walls. The next day, the primer as well as the old paint peeled away from the walls in sheets, down to the bare drywall. Huge sections of drywall paper came away from the walls too. There is also a chalky/powdery substance on the surface of the bare drywall. Can this be fixed, or should I replace the drywall? And, why did this happen? Thanks in advance.
Paint and drywall paper coming away from bathroom wall.