How to Match Up Plaster Wall With Drywall

Until the mid-20th century, interior walls inside houses were made of plaster. The walls were solid, but it was a very labor-intensive process. The development of drywall made this process much easier. Despite the fact that plaster and drywall are two different types of materials, you can cover a joint between them to provide a seamless transition on the wall.

Electric sander
Safety goggles
Mask
Spray bottle
Joint compound
6-inch putty knife
Drywall tape
Fine-grit sandpaper
Tacking cloth
12-inch putty knife

Instructions

- 1
  Carefully sand the edge of the plaster along the drywall joint to create a beveled edge about 2 inches wide. This creates space for the joint compound and tape. (The edges of the drywall are already beveled.)
- 2
  Spray the edge of the plaster with water to prevent it from drawing moisture out of the joint compound.
- 3
  Apply joint compound to the joint between the plaster and drywall with a 6-inch putty knife. Place drywall tape over the joint, then press it into the joint compound by running the putty knife over it. Allow the joint compound to dry overnight.
- 4
  Sand the joint smooth with fine-grit sandpaper, and wipe it off with a tacking cloth to remove the dust.
- 5
  Add another layer of joint compound and drywall tape, this time with a 12-inch putty knife. Allow it to dry overnight.
- 6
  Sand the joint again, and wipe the dust off with a tacking cloth.
- 7
  Apply a third layer of joint compound and drywall tape to the joint with the 12-inch putty knife, and allow it to dry overnight.
- 8
  Sand the joint smooth, and wipe it off with a tacking cloth.

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