When does a ceiling need new drywall
A ceiling needs new drywall when the existing surface is missing, sagging, removed, heavily damaged, or better covered with sheetrock than repaired spot by spot. Old popcorn ceilings and failing plaster ceilings are common cases where covering the surface with new sheetrock beats chasing cracks one by one.
Ceiling work should not hide an active leak, loose plaster, unsafe material, or a wet cavity. Those issues need to be addressed before new board is installed and finished, because the finished ceiling is only as reliable as the surface or framing behind it.
Related work: Drywall Installation, Drywall Wall Installation.
