![]() ![]() ![]() Small plaster cracks have a tendency to reappear over time. In some cases, it may be beneficial to enlarge small cracks before fixing them. Keep these factors in mind while repairing cracks to ensure a successful outcome. They may also have structural anomalies, such as horizontal studs. Plaster walls can be heavier due to the presence of wood lath behind them. It’s important to note that working with plaster walls is different from working with sheetrock. This will ensure a smooth and cohesive finish. After the primer has dried, paint over the area with a color that matches the rest of the wall. Choose a primer that matches the surrounding wall and apply it evenly. Once the joint compound is dry and the crack is no longer visible, it’s time to prime and paint the repaired area. This step may require some patience, but it is crucial for achieving a seamless repair. Make sure to let each coat dry completely before applying the next. If the crack is still visible after the first coat of joint compound, apply additional coats. Allow the compound to dry completely, which typically takes up to 24 hours. This will remove any high spots and ridges while feathering the edges of the repair. Once the joint compound is dry, sand the repaired area using medium- or fine-grade sandpaper. This tape helps strengthen the repair and prevents the crack from reappearing. For wider cracks, it’s advisable to use fiberglass mesh tape to cover the crack before applying the joint compound. Using a putty knife, apply a thin coat of joint compound to the crack. Listen for hollow sounds by tapping your knuckles against the plaster. ![]() To determine if the plaster is detached from the wall, press your fingers against it in several spots around the crack. Use a utility knife to clean out the crack and remove any loose plaster or debris. Enlarging small cracks for proper repairīefore you begin the repair, it’s important to assess the condition of the crack. ![]()
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