How to Patch a Hole in Drywall (Without Making It Worse)
A hole in drywall looks like a big job, but most repairs are simple. The trick is choosing the right method for the size of the hole, then being patient with the finishing. Rushing the last step is what makes a patch visible, not the repair itself.
Before you start
Check what is behind the wall before you cut or drill near the hole. Wires and pipes can sit just behind the surface. Wear a dust mask and eye protection when sanding, and cover the floor with a sheet.
Small holes: nail and screw holes
Press lightweight spackling compound into the hole with a putty knife, scrape it flat, let it dry according to the label, then sand lightly. Prime the spot before painting, otherwise it often shows as a dull patch through the paint.
Medium holes: up to about the size of a fist
- Clean away loose paper and crumbled plaster around the edge.
- Press a self-adhesive mesh patch over the hole.
- Spread a thin layer of joint compound over the patch, extending a few centimetres past the edges.
- Let it dry, then apply a second, wider coat. Each coat should be thin.
- Sand smooth, prime, and paint.
Larger holes: cut a clean square
For bigger damage, cut the hole into a neat square or rectangle. Fix a wooden strip behind the opening so the new piece has something to screw into, then cut a drywall piece to fit and fasten it. Cover the seams with joint tape and finish with two or three thin coats of compound, feathering each coat wider than the last.
Finishing tips
- Thin coats dry faster and sand easier than one thick coat.
- Sand with a light touch and check the surface with a flashlight held flat against the wall.
- Always prime before painting so the patch matches the rest of the wall.
- Use the same paint and roll it over a wider area to blend the repair.
When to call a professional
If the wall is wet, mouldy, or sagging, the hole is a symptom of another problem such as a leak. Fix the cause first. Large water-damaged areas are best assessed by a professional.
With a little patience, even a large hole can be repaired so well that nobody will ever know it was there.