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drywall joint separation

the drywall joints are separating
on all of the
garage ceiling joints(6).
the separations run the
full length of the ceiling
(26')what is causing this,
and what can i do to
stop further damage?

Re: drywall joint separation

If you're talking about the tape seperating this happened to our previous home.
What I did was remove all the tape from the joints and applied new mesh tape. Then I bought joint compound , not the finishing compound , and put on 2 coats finished with a good coat of sealer primer. Never had a problem after.
The nice thing was doing this out in the garage gave me the chance to practise my mudding skills, came in handy later for doing work inside.

Re: drywall joint separation

Three suggestions.
1) No mesh tape, just the paper kind that isn't as easy to use.

2) Before you put drywall tape down, fill the crack with drywall compound and let it dry. It will suck down alot, you may need to add a second coat. Then, add the drywall tape and the finishing coats of drywall compound as normal.

3) If there is a real problem with your building settling, try using silicon caulk in the cracks. It will cover alot of sins.

Re: drywall joint separation

What is above the garage ceiling? It may be that the joists are sagging.

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