When the crack is large the wet plaster will not stick. If this is the situation buy a roll of patching tape at a paint store.
1. Clean off all loose plaster. (Vis. 1) 2. Fill the crack with plaster and press the perforated tape into the wet plaster with a wide putty knife.
3. Squeeze out any excess plaster so there will not be a lump in the wall.
4. Let it dry, sand lightly and paint. 5. A coat of sizing will make the paint stick better and look better.
This article was written by Anne Field, Extension Specialist, Emeritus, with references from Michigan Extension bulletin Wall Repair and Fasteners.
Repairing Plaster Wall - Large Cracks Pictures MSU 2003
