Drywall Tape - Bubbling and Peeling Drywall Paper Tape
to Prevent and Repair Bubbling and Peeling Drywall Paper Tape
By Mark J. Donovan
If your new drywall work is
showing signs of bubbling, or is literally peeling off your walls, then the
paper drywall tape was not applied properly.
It is important when applying paper
drywall tape that it be properly pressed into a skim coat layer of mud, or joint
When applying drywall paper tape to
the joints and seams it is important to first apply a liberal amount of joint
compound (approximately 1/8th inch) to them.
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.
The situation is exacerbated when the
next layer of joint compound is then applied over the tape. The drywall tape
will absorb the moisture of the second application of joint compound and actually cause
the drywall tape to wick away from the drywall. This is what causes the peeling
or bubbling of the drywall tape.
The ideal solution for repairing the
bubbling or peeling drywall tape is to remove it and start over with the
application of new drywall tape and joint compound.
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.
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