How to Repair Damaged Walls

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Walls can be easily damaged, either from bumping something into them or even from water or termite damage, and it can cost large sums of money to have someone come into your home to fix the problem. Save yourself some cash and learn how you can efficiently and properly repair damaged walls yourself. Before you know it, you'll be applying these skills not just to damaged walls, but to complete home renovations.

Things You'll Need

  • Tape measure
  • Pen
  • Razor blade
  • Joint compound
  • Joint tape
  • Drywall
  • Drywall knife
  • Use either a crowbar or a drywall knife to knockdown or cut out the damaged section, depending on the nature of the problem and strength of the drywall. If you use a crowbar, try to knock out the drywall in a controlled fashion and then follow up by cutting out a uniform square or rectangular shape around the damaged area.

  • Measure the dimensions of the sections of the wall that are damaged. When measuring, it's best to round up as this gives you the greater number of choices once you've cut the drywall.

  • Lay the drywall on a flat, smooth surface that is free of debris. Some drywall can be very soft and will easily break, tear and scratch. Leaning on it can also cause it to snap.

  • With a pencil, mark the dimensions you recorded in Step 2 on the back of the drywall.

  • Press a razor blade gently and carefully along the measured lines. Don't worry about cutting all the way through.

  • Apply pressure to the dryboard and it will break along the lines you've traced with the razor blade.

  • Wedge the newly cut drywall to fit into the section that's being replaced. You'll likely have to use a drywall knife to trim the piece so that it fits more easily.

  • Cover with joint compound and immediately apply joint tape along the edges. Press firmly against the drywall.

  • Wait and allow the joint compound to dry and then apply another coating to cover the tape and increase the strength of the bond.

  • Apply texture if necessary to match the new drywall with the rest of the room.

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