How to Fix a Joint Compound Job Gone Bad

Joint compound has many uses, including filling holes in drywall, sealing joints in drywall and creating a textured finish on some surfaces. If you make a mistake when using the compound, you will have a hard surface that is tricky to repair. However, you can fix the compound using the same materials you originally used. That and a little time are all you need to fix joint compound mistakes.

Sandpaper, 40 and 100 grit
Palm sander (optional)
Tack cloth
Joint compound
Putty knife

Instructions

- 1
  Sand the area with rough 40-grit sandpaper to remove as much of the compound as possible. Use a palm sander if the job is extensive. Replace the sandpaper as needed.
- 2
  Dust the area with a tack cloth to remove the sanding dust.
- 3
  Apply joint compound over the old compound. Use a putty knife and skim the compound over the surface so it is even and smooth. Keep your hand steady and the angle of the knife consistent for the best results.
- 4
  Allow the joint compound to dry according to package instructions or 24 hours if you are unsure.
- 5
  Sand the joint compound lightly with 100-grit sandpaper to give the surface a smooth, even finish.

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