![]() Using 150-grit sandpaper, or a medium sanding sponge, sand the patch lightly to smooth out any rough edges and remove tool marks. This helps to ensure that there are no pockmarks and makes the finished product easier to sand. If hot mud is used, it is recommended that you use a lightweight-all-purpose joint compound for the final coat. Usually, three or four coats of mud are enough for a smooth and flat repair.Īlternatively, you can use quick set drywall mud, also known as hot mud, to float out the patch. Allow each layer to dry for approximately 24 hours before adding more drywall mud. Take care not to add so much mud that the patch becomes humped or convex.Ĭontinue adding additional thin layers of drywall mud over the patch using a ten-inch drywall knife. Using light weight all purpose drywall mud spread a thin layer of mud over the patch with an eight-inch drywall knife. Step 4 - Float out the repair with thin layers of drywall mud ![]() Quick set drywall mud can be re-coated within minutes. If you are using all-purpose drywall mud, allow it dry for approximately 24 hours. Smooth out any excess drywall mud from around the drywall paper tape. Press the drywall tape firmly using a six-inch drywall knife to squeeze out excess drywall mud. Place enough drywall tape to overlap the existing drywall paper that surrounds the damage. Using all purpose mud, or quick set drywall mud spread a thin layer of mud across the damaged section. Step 3 - Tape the damage using paper drywall tape If any section of the damaged drywall hits the knife, you need to indent the paper or gypsum deeper. Using the metal blade of a six-inch drywall knife as a straightedge, check that the entire damaged area is slightly recessed relative to the surrounding drywall. Make sure to indent not only the damaged gypsum but also some of the surrounding drywall paper. ![]() Using the butt end of a six-inch drywall knife, gently press the gypsum on and around the damaged area to create a slight indentation. The following steps outline what should be done when you are repairing drywall dents, scratches, and nicks that have broken through the drywall paper. By using drywall paper tape to reinforce the patch, you can create a smooth and strong repairīecause of these issues, it is recommended that whenever you have more than very minor damage to the drywall paper you use paper drywall tape to strengthen the repair. In addition to concerns about moisture damage, nicks or dents that break the drywall paper and expose large sections of gypsum reduces the integrity of the drywall. It is best to avoid bubbling drywall paper in the first place so you don't have to fix it. Also, successive repairs with additional layers of drywall mud can lead to more bubbling and further damage. Usually, a half hour or so after you apply finish coat mud to damaged drywall paper, it begins to separate from the gypsum and causes bubbling. First of all, bubbles in drywall paper do not always become evident until sometime after you leave the repair. This can cause the surrounding drywall paper to bubble up and separate from the underlying gypsum.īubbling drywall paper creates an extremely frustrating problem. When floating over a dent repair with drywall mud or painting the patch using water-based paint, moisture from the drywall mud or paint will seep into the underlying gypsum or surrounding drywall paper. Nicks and dents that break the drywall paper are susceptible to moisture damage. What could happen if you don't use paper tape? The paper drywall tape acts like a bandage, protecting the gypsum and surrounding paper from moisture. If however, the nick exposes more than one inch² of gypsum material, you should use paper drywall tape to add strength to the repair before floating it smooth. In general, if the damage is simply a small slit one inch or shorter in length, you will not need to use paper drywall tape over the repair. If the damage breaks through the drywall paper, you will need to use paper drywall tape for the repair. If a dent or nick has broken through the drywall paper, the integrity of the drywall in that area could be compromised. It also provides a smooth layer for painting. Drywall paper helps protect the drywall surface, giving stability to the underlying gypsum.
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