This method works best for small dents that are 1⁄2 in (1. 3 cm) across or less.
Using a plaster grid is optional, but it will help reinforce your wall and prevent new damage in the future.
If you want to ensure that your patch job isn’t noticeable at all, you can add another layer of drywall mud after the first round of sanding. Let it dry for 24 hours, then do a final round of sanding again to smooth it all out.
If you aren’t sure what the exact color of your wall is, chip off a small sliver of paint and take it to a hardware store. They’ll be able to match the paint color precisely so you don’t have to guess. If your wall is textured, pick up a can of wall texture spray and spray it over the patched area before you add paint. [10] X Research source
Large dents are any dents that are wider than 1⁄2 in (1. 3 cm) across.
If your drywall patch kit didn’t come with a stencil, that’s okay! Just cut a circle around the dent with a box cutter. You’ll be able to modify the drywall patch if you need to. [13] X Research source
The drywall mud here acts as an anchor to hold your drywall patch in place.
If you need to cut your patch, do that with scissors first before putting it on the wall. Cut a circle that’s about 2 in (5. 1 cm) larger than the hole in your wall. To prevent the patch from falling back into the wall, avoid pressing too hard directly on the center of the circle. Focus on smoothing the drywall mud out over the edges of the patch and onto the wall around it.
Sanding the wall is the longest part of this entire process. Sanding by hand can take up to 30 minutes.
If your drywall is textured, grab a can of texture spray from the hardware store and spray it over the patched area. Wait for it to dry, then add paint on top. [19] X Research source
