DIY Network

Repairing Rough Walls From "DIY to the Rescue" episode DTTR-102

With the closet demolition complete, it's time to repair the scarred walls and create a smooth surface. Host Karl Champley teaches homeowner Adrienne Martini the finer points of working with joint compound.

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	Figure A
	Figure B

• First, the dynamic duo prepares the wall for the joint compound application. First, they use scraper blades (a putty knife or chisel work just as well) to remove loose material near the damaged areas.

• Next, Champley mixes a small amount of dry joint compound powder in a large bucket. A drill with mixing paddle and the addition of small amounts of cold water are used to mix the compound thoroughly.

  Tip: Cold water should always be used to slow the curing and hardening of the compound.

• The drill is used to blend the compound until the consistency of cake batter is achieved. Allow to sit for one minute before proceeding. This process is called slaking, or the process of allowing the mix to cure and change from a powder to a useable putty after water is added.

• The two apply the putty by using a putty knife (figure A), working the material into the pockmarked areas of the wall. (For best results, work the putty around in several directions as you apply and remove excess as you work, so that material is flush with the surrounding wall surface.) After application, the compound must cure and dry before being lightly sanded to create a smooth surface before a second coat is applied.

• After the joint compound is cured, host and homeowner take on the second application.

  Tip: Gouges should be less than 1/8" deep before application of pre-mixed joint compound.

• The pre-mixed is applied in a thinner layer than the first application, and has to set overnight. To apply, Champley advises Martini to use a wider applicator to cover larger areas, joining the smaller repairs and surrounding wall area together (figure B). The edges of the compound are feathered as they are applied. The result? A wall that feels smooth to the touch.