How to Patch a Large Hole in Drywall
Short answer: Cut the damage into a clean square, screw wood backing strips inside the opening, screw in a matching piece of drywall, then tape the seams and finish with three thin coats of joint compound before priming and painting.
- Difficulty
- Moderate
- Time
- 2 hours of work over 1 to 2 days
- Updated
- November 9, 2026
What is causing it?
Holes larger than about 6 inches are too wide for a stick-on patch. They need a new piece of drywall supported by backing so it does not flex and crack the finish.
Tools and materials
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Tools
- Drywall jab sawCheck price on Amazon
- Cordless drill/driverCheck price on Amazon
- Drywall knives, 6 and 10 inch, and mud panCheck price on Amazon
- Framing square or straightedgeCheck price on Amazon
- Utility knifeCheck price on Amazon
Materials
- Drywall panel or patch piece, same thickness (usually 1/2 inch)Many stores sell 2 by 2 foot piecesCheck price on Amazon
- 1x3 wood strips for backingCheck price on Amazon
- Drywall screws, 1 1/4 inchCheck price on Amazon
- Paper or mesh drywall tapeCheck price on Amazon
- All-purpose joint compoundCheck price on Amazon
- PrimerCheck price on Amazon
How do you patch a large drywall hole? Step by step
Check behind the wall
Look into the hole with a flashlight for wires, pipes and ducts before cutting. Turn off the breaker for nearby outlets if wires are close.
Cut a clean square
Draw a square around the damage and cut it out with a jab saw, keeping the saw shallow.
Add backing
Slip a 1x3 strip inside the opening so it overlaps the edge, and screw through the drywall into it at each end. This Old House shows backing that overlaps into the hole by about 1 1/4 inches. Add a strip on the opposite side.
Fit the patch
Cut a drywall piece to fit with about 1/8 inch gap around it. Screw it to the backing strips with the screw heads just below the surface without tearing the paper.
Tape and first coat
Spread compound over the seams, press tape into it, and scrape off the excess. Cover the screw heads.
Finish coats
After it dries, apply two more coats, each wider and thinner, feathering several inches past the seams. Sand smooth between coats.
Prime and paint
Prime the whole patch area and paint, rolling wider than the patch to blend.
Planning materials? Try the Paint Coverage Calculator.
Safety notes
- Wiring and plumbing run inside walls. Look before you cut and keep cuts shallow.
- In homes built before 1978, painted surfaces may contain lead. Follow EPA lead-safe practices for cutting and sanding.
- Wear eye protection and a dust mask.
When should you call a pro?
- The hole was caused by a leak, or the framing behind it is wet, soft or moldy.
- Wiring was damaged.
- The wall is plaster on lath, which needs different materials.
Frequently asked questions
What is a California patch?
A drywall piece cut larger than the hole with the gypsum scraped off the edges so the paper forms a flange. It works without backing for holes up to about 6 inches square.
Mesh or paper tape?
Mesh is self-adhesive and easy for beginners. Paper tape is stronger for seams and corners but must be bedded in compound.
How do I match wall texture?
Spray texture cans for orange peel or knockdown are sold at hardware stores. Practice on cardboard first.
Sources
Steps are based on these manufacturer and safety references. Your product's own manual comes first.