Just google saggy ceiling. It's caused by ceiling drywall separating from the joist, usually by old nails.
Depend on how old your apartment is, it may or may not be a big problem.
Just google saggy ceiling. It's caused by ceiling drywall separating from the joist, usually by old nails.
Depend on how old your apartment is, it may or may not be a big problem.
• 原因可能还是水:moisture 让drywall 边缘膨胀 -orlandomagic- ♂ (0 bytes) () 09/06/2020 postreply 06:38:04