Quote:
Originally Posted by biggamefish1
It is called expansion and contraction. Hairline cracks happen in the tape joints between two or more pieces of drywall board. More common in a vaulted ceiling with sissor trusses. It is not a structural issue in any case. If it's a visual bother, have it retaped with fiberglass tape and refinished through texture for the strongest bond.
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That should last a year or two and then he'll be back where he started.
It's not more common with scissor trusses, it's just as likely to occur with dimensional lumber framing. Using Fiberglass tape is a recipe for more trouble. Paper Taper is much better at absorbing tension movement and it's stronger. I'd bet the farm, Fiberglass tape was originally used and that's part of the problem.
The proper way to do it, likely involves creating floating joints.
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