Just bought a house; vaulted in “great room.” It appears the drywall was fastened straight onto the side of the truss, which has cambered and split the drywall joint. Any ideas, please?
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How big is the joint? Now is probably the worst season.
can't tell, tape n compound visibly separating and the plane of the drywall (attached to the truss) is slightly wonked.
Crown moulding.
Is it regular to run crown across the gable of the vault? Maybe I is just ignint.
Put a matching rail across the gable. Or put in fake beams. You are not going to be able to stop the truss uplift - it will happen every year - so the best approach is probably to find some way to disguise it. You might get some suggestions for how to properly hang the drywall (if you want to demo it and replace) over on Breaktime.
What happened is called uplift. This can occur on a normal ceiling line when the drywall is screwed off to close to where the ceiling and wall meet.
If the expansion is minor you can save yourself a lot of trouble by caulking it with a good elastometric caulk. Especially if it hasnt torn the paper tape underneath.
You could take down the panels and reinstall, but for help it would probably help here if you attach some pics. Furring out the truss may not work.
-zen
I can't remember how far are you supposed to keep screws away from the wall/ceiling joint?
This is just one of a ton of info on truss uplift, you can search over in breaktime.
18" is the standard on a truss, but doesnt seem to make much sense... I recall Myron Ferguson (drywall guy) stating a standard for stick build on his video, its probably also in his book. (taunton press) This really should only be a problem if the top of the truss isnt properly ventilated, or isnt insulated, but its a regional concern as well.
If you think about the problem, you would screw on centers, so if you didnt screw off the first run on the wall you should be safe. This would put you 16 oc away on the next joist. But if you fur out the ceiling, it all changes.
http://forums.taunton.com/n/find/findRedir.asp?webtag=tp-breaktime&mg=114A7BAA-7F03-4A6D-94DD-09E0C369D620
-zen