How to Repair Drywall Cracks and Holes

Drywall is surprisingly resilient, but life happens. Whether it is a hairline stress crack from a shifting foundation or a jagged hole left by a doorknob, these imperfections draw the eye and degrade the look of an entire room. Repairing them is not about brute force; it is about patience and managing the thickness of your compound to ensure the fix disappears under a coat of paint. A quality repair job sits flush with the wall. The biggest mistake most people make is overfilling the hole, which creates a noticeable 'hump' that is impossible to hide with paint. By using thin, layered applications of compound and careful sanding, you can restore your wall so that nobody, including yourself, will ever know the damage was there.

  1. Cut away loose fragments. Use a utility knife to cut away loose paper or drywall fragments around the edges of the crack or hole. Ensure the opening is clean and slightly beveled inward so the patching material has a stable base to grip.
  2. Secure the foundation. For small holes, apply a self-adhesive mesh patch over the opening. For holes larger than four inches, insert a backing plate or a scrap piece of drywall inside the hole, screwing it into the surrounding studs to provide a rigid backing.
  3. Press compound into mesh. Using a six-inch drywall knife, press joint compound firmly into the mesh or over the patch. Keep the layer thin and even, smoothing it out so it does not sit much higher than the wall surface.
  4. Blend edges seamlessly. Once the initial fill is set, use a wider ten-inch knife to feather the edges of the compound outward into the surrounding wall. This creates a gentle slope that hides the transition point.
  5. Smooth to invisible. After the compound is completely dry, use 120-grit sanding paper or a sanding sponge to smooth the area. Lightly sand until your hand cannot feel a transition between the patch and the wall.
  6. Prime then paint. Apply a coat of high-quality drywall primer to the sanded patch before painting. Paint the entire section to ensure the texture and sheen match the existing wall perfectly.