Common fasteners do not perform too well when used on plaster and result in holes or cracks which are unattractive. Settling or shrinking of walls also cause cracks.
Small Cracks Small, narrow cracks can be filled with patching plaster.
1. Remove loose plaster and with an icepick or knife, clean the crack so it is wider at the bottom than on the surface. This allows the new plaster to stick better.
2. With a brush or damp cloth remove loose plaster dust. If water mixed plaster is used dampen the crack.
3. Fill the crack with patching plaster using a criss- cross motion to work it in.
4. With the wide putty knife feather the edges of the patch, about 2" on each side of the crack, so it will be less visible.
5. When dry, sand lightly and paint.(Vis. 1) This article was written by Anne Field, Extension Specialist, Emeritus, with references from Michigan Extension bulletin Wall Repair and Fasteners.
Repairing Small Plaster Cracks Pictures MSU 2003
