It is unavoidable that when you move furniture, carry something into your house that is wider than you realized, or open the door with a little to much gusto, you will end up with dents and dings on your walls.
It always reminds me of an episode of Newlyweds with Jessica Simpson when her husband Nick Lachey put a gouge in the wall moving furniture. She was pretty upset, and her comment about the issue was, “We’re going to have to re-wall our house.”
You definitely don’t need to re-wall the house or even repaint the whole wall to take care of one little spot. There are methods that anyone can do to cover up a mistake.
After scraping any loose drywall or paint from the area, apply self-adhesive drywall mesh over the hole. Then you are ready to spread on some sheet rock mud with a putty knife.
This post gives more on the technique of fixing dents in your drywall:
How to Patch and Repair Drywall
Use a drywall knife to cover the patch with lightweight joint compound in a crisscross pattern, feathering the edges so it blends with the wall. To feather the edge, increase pressure and angle on the drywall knife as you reach the outer edges of the patch area to minimize, or thin, the joint compound on the drywall.
Let the patch dry and apply a second coat of compound if needed. Sand smooth.
See the full post here: How to Patch and Repair Drywall
If you have to apply a second coat, use a slightly bigger putty knife. It makes scraping off the excess compound and feather out the edges easier. After you’re done patching, you’ll want to apply some primer and then touch up paint.
If you’re like me you want to see someone demonstrate the method of patching a hole in drywall:
If the hole is medium to large sized, the technique is quite a bit different. At that point, you need to have a scrap piece of drywall that you can cut to fit into the hole.
You have to attach it to either a stud or use backing to hold it in place. Then you tape around the edges of the patched in piece of gypsum board with the self-adhesive drywall mesh and finish it with joint compound, just like you did before.
You will definitely need several coats of drywall mud to hide any imperfections. Again, here is a demonstration of patching a bigger hole:
This method of leaving the sheet rock paper around the piece of drywall that will fit into the hole creates a very smooth finish without having to use the mesh tape. Also, by wetting down the paper before you put it in place, it sticks and blends into the rest of the wall very well.
As I mentioned above, each time he added another layer of sheet rock mud, he used a bigger knife to feather out the edges. Once he finishes, you would never know there was a hole there.
Matching paint to touch up with wall is a little tricky, but there are a number of really good apps that can help you find the perfect color. Some of the top apps are mentioned in this post by This Old House: https://www.thisoldhouse.com/ideas/5-must-have-paint-apps