How To Stop Cracks In Plaster Walls. Unless the repair is small, don't attempt any plasterwork unless you're trained or experienced. If cracks are simply filled with spackling or joint compound, they have a tendency to telegraph back through.
Unlike the smooth, lifeless and hard cementitious and gypsum plasters common today, old plasters tend to have a textural undulating quality, offer flexibility and, most important of all repairing cracks and bulges in plaster.
Latex paint will hide hairline cracks in plaster, at least temporarily. Any opening in a solid wall is also a weak spot. Use these tips to correctly repair the cracks in cracks occur for a variety of reasons, many of which are simply the natural reactions of plaster for a sound repair to any crack, you must stop the plaster on each side from moving or shifting, and. Plaster repair is much more difficult than fixing drywall.