Wall repair patch
A wall repair patch is made of a thin square of perforated aluminum covered by a slightly larger square of self-adhesive mesh tape. The back of the aluminum square, like the mesh tape, has an adhesive coating for secure fastening to the repair surface. Wall repair patches are available in four-inch, six-inch and eight-inch sizes.
The wall repair patch can be used to cover holes, indentations and damaged areas in both drywall and plaster surfaces. Surface damage that can be covered with a wall repair patch may include drywall cover damage.
Eye protection, either safety glasses or safety goggles, should always be worn whenever preparing surfaces for paint. Respiratory system protection should be worn whenever you are creating dust or working in a dusty environment. Respiratory system protection should also be worn whenever you are applying solvent-based materials. Eye and respiratory system protection products can be purchased wherever workplace safety equipment is sold.
Limits of wall patch repairs
Wall patch repairs should not be subjected to the weight-bearing demands of nails, screws or picture hanging hardware. These repairs may fail under the weight of any load. Attempting to drive a nail or fasten a screw into a wall repair patch can damage the aluminum square causing failure of the repair. Do not use a wall repair patch on any ceiling or wall surface where you may later install plant hooks, pictures, wall hangings, curtain rods, valances or other accessories.
Using a wall repair patch to repair a surface before the application of decorative paint, faux finish, mural art or stencils
Due to the limits of wall patch repairs, care should be taken in the decision to use a wall repair patch to repair a ceiling or wall surface where decorative paint, faux finish or mural art will be applied. If a nail or screw is driven into a surface repaired by a wall patch, significant, and possibly irreparable, damage can occur to decorative paint, faux finish and mural artwork. For best results, avoid the use of a wall repair patch on surfaces where decorative paint, faux finish or mural art will be located. Instead, repair drywall surfaces using drywall, and plaster surfaces with plastering materials applied by a licensed professional plastering contractor. Begin by using a putty knife or scraper to remove any peeling or loose material from the border of the repair. Then sand the border area with 80-grit sandpaper or a medium-grit sanding sponge. Remove sanding dust with a wiping cloth or towel.
Peel the backing from a wall repair patch. Center the patch over the hole or damaged area and press gently into place. Avoid putting pressure on the patch in areas where the patch covers a hole.
Cover the patch with a coat of drywall joint compound. Allow drying. Two or three additional coats will be needed to cover the patch. After the patch is covered, lightly sand dried joint compound. Remove sanding dust with a wiping cloth or towel before priming and painting.
More detailed coverage of this topic can be found in the book:
The Homeowner's Guide to Surface Preparation for Interior House Painting, on pages 115-119.
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