I'm repainting a bathroom where the joint between the wall and the ceiling is subject to movement. The slanted ceiling is on the underside of a pitched roof. The roof flexes under the weight of snow and the occasional repairman; hence the joint between interior wall and ceiling flexes enough so that the existing conventional taped joint, covered with brittle joint compound, has failed with visible separation of the tape and cracks running in and alongside the joint.
Does anyone have a suggestion of how I can prepare this joint so I can paint over it?
I know that some caulks advertise that they can be painted and that the caulk might offer some ability to flex and still span the small gap (varying between 1/8 to 3/8 inch) between wall and ceiling that constitutes the joint. This joint is not over the tub, so there should be no moisture issue to complicate the job.
Thanks in advance