Metal cornices should be checked for rust corrosion deflection and wood cornices should be similarly inspected for rotting cracking and splitting.
Replacing damaged cornice.
Take the scissors and cut the styrofoam in approximately the same size as the missing cornice part.
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.
Original cornice may have become damaged over the years or you may find cracks that have been covered with paint once you ve stripped it back.
Use scraper to fill gap between cornice and ceiling with cornice cement.
First use a small chisel to carefully chip away the edges of the crack resulting in a more even surface and then sand away any lumps so that the area is smooth.
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Repair a damaged victorian cornice.
With a wet sponge clean the damaged area from any dirt and loose plaster particles.
Mix cornice cement in bucket to form a paste.