Do you overlap drywall tape?
DON’T overlap drywall tape.\nApplying a single layer of paper tape will help minimize any chance of ending up with a bulge in the finished wall. Begin by applying a thin layer of compound to a single vertical joint using a quality knife. Its flexible blade will distribute mud uniformly over the joints. Then, immediately after applying mud to the entire length of a single vertical joint, position a strip of paper tape (about two inches shorter than the joint) over the wet mud. Pull the joint knife smoothly—working from the middle of the tape to each end—to bed the tape securely in the mud. Repeat with all vertical joints. When you tape horizontal joints, cut the tape so it fits between the vertical joints without overlap. If they do overlap, they will probably leave bumps. The application of a single layer of adhesive tape will help minimize any possibility of swelling in the finished wall. When horizontal joints are tape, cut the adhesive tape to integrate between vertical joints without overlapping.
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