How to Repair Drywall After Blowing in Insulation

Measure the width and height of the hole in the wall. Use a utility knife to cut out a square piece of drywall that is the same height and width as the hole.

Place the piece of drywall on the wall over the hole. Use a pencil to trace around it. Set the new drywall aside and use a jigsaw to cut out the wall, following the marked lines.

Slide a wood furring strip, wider than the now square opening, into the hole so that its length runs horizontal to the floor.

Hold the furring strip tight to the inside of the wall. At the same time with your other hand, drill drywall screws through the drywall and into the furring strips on either side of the hole. Repeat with another furring strip near the bottom of the hole. These strips will give the new piece of drywall something to rest against and be attached to.

Place the square piece of drywall into the hole and up against the wood strips. Attach it to the strips with drywall screws in each corner. If it is a large hole, you might want to put a screw in the middle of each strip as well.

Spread drywall compound over the seams where the new and old drywall meet. Place strips of drywall tape over the compound to cover the seams. Spread one more thin layer of compound over the tape to seal it and let it dry until the next day.

Sand the compound, then spread another layer over the seams with a wider taping knife. Taper down the edges of the compound as you spread it away from the repair area so that it seams like a level smooth wall. Let it dry another day, then sand one more time. Finish the wall to match.