Carpentry Basics: Drywall Repair

SKU: RVI-11470Duration: 20 Minutes

In some situations, you may have to repair drywall that has been damaged or repair drywall that was improperly installed by someone else. This interactive online course will explain and describe the tools, materials, finishing techniques and procedures used in repairing drywall.

Course Details


Training Time: 20 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English

Learning Objectives

  • Demonstrate how to repair holes in drywall
  • Describe proper method to remove damaged drywall
  • Demonstrate the procedure for adding structure for drywall repair
  • Recall techniques for taping, mudding, and finishing drywall repairs

Key Questions

The following key questions are answered in this module:

What tools are used to repair drywall?
The tools used to repair drywall are straightedge or T-square, utility knife and blades, drywall saw, jigsaw, screwdriver, joint trowel, mud pan or hawk, sandpaper and drywall screen, sanding block or electric sander.

What is mudding?
Mudding is the application of thin coats of joint compound, commonly known as mud, to fill in the joints between drywall sheets and cover up the drywall screws.

What type of patch is recommended for medium hole repairs?
The California, or butterfly, patch is a common method for repairing holes up to 8 inches in walls.

What type of patch is recommended for large hole repairs?
For patching 8-12 inch holes, any holes in ceilings, or those created by doorknobs, a strapped-backing patch is best.

How long should the top coat dry before sanding?
Allow the top coat to dry at least 24 hours, if possible. When the mud has completely dried, sand it to smooth out the mud surface and blend it with the existing drywall.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

The California, or butterfly, patch is a common method for repairing holes up to 8 inches in walls. It involves making a patch with excess drywall paper around its perimeter to help secure it to the wall. The steps for a California patch are as follows: 1. Cut a rectangular piece of drywall that is at least 1.5 inches larger than the hole on all sides 2. On the back side of the patch, use a utility knife and a straightedge to score a line about 1.5 inches from each edge 3. Snap the drywall along each of the scores and carefully pull the drywall off of the paper facing 4. Place the patch over the hole and trace around it. Mark the patch so you know how it fits in the hole later. 5. Use a drywall saw to cut the patch-shaped hole 6. Measure 1.5 inches from each edge of the hole, score the drywall paper and then remove the strips 7. Check the patch for proper fit and trim any drywall or facing paper 8. Apply setting-type or all-purpose drywall mud around the edges of the hole 9. Insert the patch into the hole and use a drywall knife to press the paper flaps into the mud 10. Let the mud dry and then apply at least two more coats on top of the patch, sanding between each coat
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