A common household repair for homeowners is repairing a crack in your drywall. Whether this is a more urgent matter due to an accident (such as a piece of furniture being slammed into the wall), routine wear-and-tear (a hole created by a doorknob), or a preparatory step for painting a room, it's a fairly cheap, simple repair that anyone can do. Repairing cracks in drywall cannot only help make your home look better, but it can also help prevent the crack from getting bigger and becoming more expensive and harder to repair.
- Skill level:
- Moderately Easy
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Things you need
- Box cutter
- Shop vac
- Mud mix
- Drywall pan
- 6-inch taping knife
- Drywall tape
- 10- or 12-inch taping knife
- Fine-grit sandpaper
- Dry rag
- Paint brush
Use a box cutter to cut a groove along each side of the crack, removing any large pieces of debris with your knife or a shop-vac.
Prepare the mud mix that you'll use to patch the crack by pouring a small amount of water into your drywall pan, followed by a small amount of mud powder. Many different varieties of mud powder are available, with different drying times, so follow the instructions on the label for the proper way to prepare the mix.
Use the 6-inch taping knife to apply the mud mix to the crack. Keep your finger over the centre of the knife, and guide it right over the crack so that you push the mud mix into the crack.
Place the drywall tape over the crack, and use the 6-inch taping knife to press it into the mud mix that you just applied.
Remove any excess compound on the tape by using the larger taping knife to scrape it away.
Add a thin layer of mud mix over the tape with the 6-inch taping knife.
Let the patch completely dry. You might want to let it dry overnight to ensure that it is completely dry.
Mix up another batch of mud mix, and apply another coat of mix to the crack with the larger taping knife.
Repeat steps 7 and 8 to apply a final coat of mix.
Sand the patch with fine-grit sandpaper until you have smoothed it out. Wipe the patch down with a dry rag to remove any loose residue form the patch.
Use primer to paint over the patch, and allow it to dry. Add a second coat of primer if the first coat is not thick enough.
Paint over the patched up area with the same colour paint as the rest of the room.
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