How to repair hairline crack in drywall

Use a inch taping knife to spread a second layer of drywall mud over the tape, extending 5 to 7 inches past either side of the tape. Use long strokes to spread the mud evenly over the wall. Allow the mud to dry. If the tape is still visible through this second layer of mud, you can repeat the process to apply a third layer. Remove residual dust with a rag, and paint the patched area to match the surrounding wall.

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To fill small cracks you need something that is liquid enough to penetrate the crack but drys to a finish that can be painted. First apply a bead to the crack then using a crosshatch pattern work the caulk into the crack. After the caulk has had about 5 minutes to setup use a damp not wet paper towel and remove any excess caulk from around the crack without actually going over the crack its self.

Painted surfaces especially ones that have paint applied by a roller have a texture so it is important to remove the extra caulk the best you can so the texture will remain. By Service. Healthcare Facilities Hospitals. Our Promise. How We Work. Preferred Products.

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Handyman Tool Videos. Previous Post Next Post. Why Does Drywall Crack? Step 3: Smooth It Out After the compound has dried, scrape off any excess or rough spots with the putty knife.