Plaster wall patch how to#

Some plasters set quickly, so don’t delay in feathering the plaster surface flush to the surrounding surface.

After the plaster has set thoroughly, apply a second coat, using a wider knife or trowel, preferably one wide enough to sweep over the entire width of the patch. Some shrinkage and cracking is likely, especially in large patches. Let the newly applied patch set overnight. Use a small filler knife, and bring the plaster just shy of the surrounding finish plaster. Fill the edges of the hole with plaster, covering the tape or screening.

If you are patching a larger void, a two-coat approach is probably best. Most commercial patching plasters require a thorough wetting of the surrounding plasterwork, though some do not (read and follow the instructions to be certain). For large holes, you may wish to use a sheet of aluminum or galvanized screening. Gorilla Wall Repair Kit contains all of the tools you need to complete strong, durable repairs on walls, ceilings and both small and large holes. If you have a crack or hole in your ceiling plaster, follow the above steps.

Plaster wall patch how to#

This will help bond the old and new together. Patching Plaster How to Repair Ceiling Plaster. STEP 2: Reinforce the patchĪt the joint between the existing wall and the new patch, apply self- adhesive fiberglass mesh tape. To repair a small hole (about 1 inch or smaller), cut out a piece of. If necessary, add wooden nailing surfaces at the edge of the wallboard patch to be certain it remains flat and stable. Fill cracks and tiny nail holes with plaster of paris and smooth it out with a putty knife. Replace damp or molding wallboard that sags. When working directly on a masonry surface, use a club hammer and cold chisel rake out the joints to a depth of a quarter inch so that the plaster can form “keys” in the joints, adding strength to the new surface. Another good approach is to try patching first.