![]() ![]() A special drywall sanding block can be mounted with fine-grit drywall sandpaper, and it accepts a threaded pole to allow you to easily sand high up on walls without a ladder.Īfter sanding, wipe down the wallboard with a clean cloth to remove sanding dust, then use a 10- or 12-inch knife to spread another layer of compound over the joints, feathering the edges. It is best to use a hand sanding block do not use a power sander on drywall. DIYers, though, are more likely to need a light sanding before applying the fill coat. (Wear a dust mask and eye protection while sanding.) Some professionals omit sanding entirely, simply using a wallboard knife to knock down raised areas of the dried compound. Lightly sand the dried compound to remove any ridges and bumps. It will be subsequent layers of mud applied with a wide wallboard knife that raises out the joints so they are perfectly flush with the surrounding panel areas. The edges of drywall panels are slightly recessed as they are manufactured, allowing the paper tape to lay just slightly below the outer surface as it is applied. There should be a very thin layer of compound over the tape at this point, but you will still clearly see the tape through the mud. Immediately apply another thin layer of compound to cover the tape and fill the joint. Apply just enough pressure to squeeze a little compound out from under the tape. Hold the tape in place with one hand while pulling the taping knife over the tape (work from the middle of the joint toward the ends). Immediately press the paper tape into the mud, centered over the joint. With a 6-inch taping knife, apply a smooth, thin layer of mud over the joint. Next, scoop some mud into a compound tray. Many pros, however, feel that paper tape creates a joint that is less likely to crack and show through after painting.īegin by cutting a length of paper tape to the exact length of the joint. ![]() If you are using paper tape, it must be embedded in a layer of compound, and thus the process takes slightly longer than with fiberglass tape. The Spruce Home Improvement Review Board.
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