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Unread 10-22-2008, 09:21 AM   #1
A2theK2
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drywall before or after mud?

Sorry for this post, I'm pretty sure I read this somewhere else on the forum but I can't find it this morning, i guess lack of sleep from having a teething 9mo old reduces focus...

If i'm going to mud my floor (over hydronic radiant), should the vapor barrier and drywall go on before the mud...(this seems like it would send moisture into the drywall where they meet).

And in either case, should the poly vapor follow the same placement as the drywall, or is it safe to say (for moisture) that I would always want to run the poly to the floor (maybe even UNDER) the mud bed a few inches?

thanks! I'm going to take a nap.
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Unread 10-22-2008, 09:38 AM   #2
bbcamp
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You can put the vapor barrier (on exterior walls only) down to the subfloor, but there's no need, or desire, to lay it under the mud. The drywall can go next. At the bottom of the drywall, staple "Sill-Seal" ( a closed cell material that is used to seal the gaps under walls) to provide an expansion area. This will also keep the drywall from wicking water out of the mud. After the mud cures, you can trim the excess Sill-Seal with a utility knife.

Enjoy your nap!
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Unread 10-22-2008, 11:00 AM   #3
A2theK2
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thanks!
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Yes that's me, and I'm covered in mud.
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