How to fix cornices
You can do a quick cover-up, but it’s best to firmly set the cornice back in place.
Gather your supplies
• Cornice cement
• Plasterboard screws
You’ll also need
Paint scraper; bucket; drill; lint-free rag or sponge; fine sandpaper; painting equipment; sealer undercoat; acrylic paint to match ceiling colour
Here’s how...
Step 1
Use paint scraper to remove any loose paint or plaster along crack.
Step 2
Mix cornice cement in bucket to form a paste. Use scraper to fill gap between cornice and ceiling with cornice cement.
Step 3
Use drill to screw plasterboard screws up through cornice into ceiling so cement oozes out of crack. Remove excess cement with scraper and use to fill screw heads.
Step 4
Leave cornice cement for a few minutes to start setting, then wipe along crack with damp lint-free rag or sponge for a smooth finish.
Step 5
When cement has fully dried, sand lightly if required, then apply sealer undercoat. Let dry and follow with two top coats using acrylic paint to match ceiling colour.