Why You Should Avoid Fiberglass Drywall Tape Like The Plague!
The truth is, it has its place, but – please! not on your drywall
seams.
Yes, my view of this is controversial. And I have my (good) reasons.
Actually, people who use fiberglass tape instead of paper tape for drywall taping are helping me make a living.
As a drywall finisher and a plaster repair specialist, I have made thousands of dollars over the years repairing drywall seams taped with fiberglass. Thanks, folks.
What happens? Drywall seams need a RIGID tape to stay closed. Especially over butt joints, the fiberglass taped seam will wiggle ever so slightly some time down the road after finishing, and presto! a hairline crack develops right down the middle of the joint.
The tape isn’t broken. It’s just that the drywall mud overcoat is not rigid enough – tough enough – to add the strength necessary to permanently secure the joint.
How do I know this? Well, for one thing, I have noticed that the long, recessed drywall seams tend to stay taped better. With those seams, the mud overcoat is thicker because it is filling the...