Patching a sheetrock seam: tape or not?


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Old 12-21-18, 06:38 AM
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Patching a sheetrock seam: tape or not?

I had a roof leak; the water came in through a moderately sloped ceiling, right at the joint between two pieces of drywall. The damaged area is about 18" long by about 4 wide. I'll have to remove the old tape and dig out the damaged stuff; I don't yet know whether I'll have to put any backing in but I'm hoping not.

Do I also need to re-tape the area or just patch it?

(FWIW, I got a roofer in to do a repair; it's been more than two months now and no leaking, so I'm taking the chance that it's OK to patch now.
 
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Old 12-21-18, 06:43 AM
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Any time there is a seam or crack you need to use tape. Paper tape has a better track record than the mesh/sticky tape. If you use sticky tape you should use a setting compound over it to lock it down.
 
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Old 12-21-18, 08:29 AM
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Unless it really is a small area you might find it easier to patch by cutting out a larger area. The edges of sheetrock need to be screwed down to something. Often it's easier to patch by cutting back to the center of the adjoining studs. That will leave you 3/4" of the stud exposed to screw your new sheetrock to. Then patch normally with tape and mud.
 
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Old 12-21-18, 12:37 PM
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Tape.
Paper tape.
 
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Old 12-21-18, 02:34 PM
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Thanks. I should have posted a picture, too; here's some perspective.
 
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Old 12-21-18, 02:44 PM
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Cut out the loose tape and see what the drywall behind it looks like.
 
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Old 12-23-18, 05:08 PM
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OK, dug out the loose stuff. Looks like there's some mold I have to treat but there shouldn't be any more moisture for there to be a continued problem (fingers crossed).

For some reason I'm being told that I've run out of room to upload, though I've only uploaded a total of 3.82 MB, and I can't find a way to delete/downsize the old attachments. So here's a linked picture.
 
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Old 12-24-18, 03:56 AM
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I'd fill it in with a coat of Durabond ..... although any setting compound or even ready mix joint compound will work.
 
 

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