Drywall/ Plaster Repair In Lakewood, Ohio, a suburb of Cleveland, where I do most of my rehabilitation work, cracks and holes in the plaster are common. You will experience similar issues in Detroit, Chicago, Pittsburgh or any other industrial city throughout the east or Midwest. Holes in plaster are often the result of water infiltration, the result of vandalism, but could be the sign of more serious foundation issues. Once the root cause is fixed, patch the area with inch drywall. Secure the drywall to the hole with at least 2 drywall screws. Insert your rotozip near the edge of your hole and cut the drywall by pressing the rotozip blade against the remaining plaster. Once your piece is cut, secure it with multiple drywall screws, mud the gaps, tape, re-mud then sand to a smooth finish.