How To Repair Broken Plaster Walls. (for more about how plaster walls are built, see plaster wall construction.) over time, these keys can disintegrate, causing the plaster to crack, crumble if, when you push on the wall, it flexes as though it has broken away from its support base, call a plaster specialist—the repair will involve removing. Use painter's tape to hold the drop cloths in place.
Until the 1930s, plaster walls were made with wood.
A 1/4″ drywall panel normally used for repairs and overlay costs $11 on average, the 1/2″ sheet best for walls and ceilings is normally priced between $10 to $20, while the 5/8 drywall primarily for. When working directly on a masonry surface, use a club hammer and cold chisel; The most common problem with plaster walls is cracking or pulling away from the lath behind it. Cut a new piece of plasterboard.