Identify the cause of the damage
Turn off power to any affected ceiling fixtures
Protect the floor and furniture with drop cloths
Cut out any loose, sagging, or damaged drywall
Remove wet insulation if present
Dry the area completely before repairs
Inspect for leaks, mold, or structural damage
Patch small holes with drywall patch or mesh tape
Cut a new drywall piece to fit larger damaged areas
Secure the patch to ceiling joists or backing
Tape the seams with drywall tape
Apply joint compound in thin coats
Let each coat dry completely
Sand the repaired area smooth
Apply primer to the patch
Match and paint the ceiling
Reinstall any fixtures after repairs are complete
Call a professional if the damage is extensive or caused by ongoing leaks