08/29/2026
From time to time I get tasked with major drywall repairs- BIG holes in the wall that need to be patched like new. I first found the vertical 2 x 4 studs, and using my large level I drew vertical lines on each side of the hole in the centers of the two studs.
Using the same level, I then drew lines below and above the hole, so I would be able to repair as a squared up rectangle. Using a sharp utility knife, I cut out the rectangle, except for the two places where I found screws in the centers of the studs that I needed to work around. (Not a problem.)
Once I was sure I had cut all the way through the drywall I tapped it with my knuckles until I could remove the pieces and set them aside. (Two or three of the clean pieces I gave to The homeowner so that they could match the paint.) as you can see in the picture I had a nice squared up rectangle to then patch, and wood on three sides!
I carefully measured the needed cut, and using some spare 1/2 inch drywall I cut out the rectangle and set it into the new hole. I screwed it down using five drywall screws, then I put some fiberglass reinforcement tape over all four joints.
About a year ago, I started using fast set drywall compound. In this case, I used my favorite “20 minute set”, and having mixed up a small batch in my plastic bucket. I applied it using a small putty knife. I made sure to work the compound deep into the cracks and to completely cover the fiberglass tape. This is very similar to how you would mud any other drywall joint. In this case, I used the small putty knife to apply the compound where it was needed and to actually over-apply it a little bit. Using my favorite 6 inch putting knife, I began smoothing over the next five minutes until I had a nicely built up joint.
If you’re not good at using drywall compound, don’t sweat it. Just stay after it.
I cleaned up my mess of course since the drywall compound starts to sit in about 20 minutes. I had set my timer when I first started mixing up the compound, so I knew that I needed to be back working on it at about the 2 1/2 to 3 hour mark. So that’s what I did.
Typically, you need three applications of drywall compound to get a pretty patch. Using the faster drying compound, you wait hours, not days, in between layers.
This one was ready to paint the next morning by about 9 AM.