When a plaster wall cracks, it is not merely a cosmetic blemish; it is the structure speaking. It is a symptom of tension, movement, or decay. To the untrained eye, a crack is a nuisance. To the discerning homeowner or architect, it is a diagnostic clue.
A crack cannot simply be spackled over. It must be "chased" or opened up. Using a utility knife or a can opener (a traditional plasterer’s tool), the crack is cut into a "V" shape. This removes loose material and creates a mechanical bond for the new filler. cracks in plaster walls
Very fine, often running in random directions or resembling a spider web. The Diagnosis: These are almost always cosmetic. They typically result from the natural curing process of the plaster or the application of an overly rich (strong) finish coat. As the moisture evaporates, the surface shrinks slightly. The Verdict: Benign. These are superficial and do not indicate structural failure. When a plaster wall cracks, it is not