Drywall Tape - Bubbling and Peeling Drywall Paper Tape

This first application of joint compound is typically referred to as the “skim coat” or “bedding coat” layer, however it is important not to skimp too much when troweling on this first layer of mud / joint compound. As a matter of fact, drywall sheets are dimpled on the edges that are expected to butt up against other drywall sheets to allow for the drywall tape and skim coat of mud.

Also, when applying the drywall tape to the seams that have been freshly skim coated it is important not to press too hard with the trowel. Pressing too hard will cause the joint compound to be squeezed out from behind the drywall tape. As a result, the drywall tape will not adhere to the wall sufficiently.

If there are only a few bubbles, or only one small section of peeling tape, you can slit the tape with a razor blade, and using a small trowel apply joint compound underneath the paper and then press the paper into the joint compound with your trowel. Once it has dried, apply additional joint compound over the tape. Once this coat has dried, apply one additional coat of joint compound and then sand lightly, making sure to feather out the edges.