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-   -   How to fix crack in butt joint on ceiling (http://www.diychatroom.com/f101/how-fix-crack-butt-joint-ceiling-110274/)

kurtinthebox 07-10-2011 05:31 PM

How to fix crack in butt joint on ceiling
 
Hi every one, I recently overlayed 3/8" sheetrock over the existing ceiling that had painted swirl finish. I used paper tape on the outside perimeter inside corners and used mesh tape along the seams and butt joints. When applying my final coats of lightweight joint compound that there was a slight hairline crack along the butt joints of the first two sections of sheetrock, so I applied more compound and again saw there is a slight crack along the joint. If I push up against the drywall the crack dissappears because it is hanging down ever so slightly. Should I remove the mud with water and a spounge along the joint and tape with paper and remud? Or should I go in the attic and piece in 2x6 between the joists so I have something to screw into along butt joint and then screw and finally mud over?

oh'mike 07-10-2011 06:19 PM

That's loose and moving---so your idea of blocking will cure the problem---get up into the attic---

Oh, fun---Mike---

bjbatlanta 07-16-2011 04:33 PM

Did you use setting type compound on at least the first coat on the mesh tape?? You should have.

Gary in WA 07-16-2011 10:37 PM

Back-up for bj; http://www.usg.com/rc/technical-arti...e-en-J1190.pdf

More tips; http://www.usg.com/rc/data-submittal...ata-MH1178.pdf

Gary


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