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Old 09-14-2011, 07:37 PM   #1
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Finishing my basement: wall insulation?


Hi all. First post. Been lurking for a while trying to find some answers to convince myself I can tackle my basement finishing project.

My home is in Freeland MI, zone 5 for insulation code purposes. My basement has poured walls, excellent drainage and radiant heat tubes in the floor and is unfinished. I'm going to stud frame and drywall the walls. Should I put a vapor barrier between the poured wall and the stud wall? Or, should I not install a vapor barrier so the wall cavity can breathe and just insulate the wall cavities? Any input would be appreciated. Thanks.

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Old 09-14-2011, 08:10 PM   #2
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Finishing my basement: wall insulation?


VB goes on the warm side. I prefer spray foam insulation which acts as insulator and VB.

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Old 09-14-2011, 08:33 PM   #3
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Finishing my basement: wall insulation?


So, paper side of the insulation facing the inside, against the backside of the drywall? That makes sense now that I think about it. How else would I install it!? Duh! What about Visqueen plastic sheet against the wall?
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Old 09-14-2011, 09:15 PM   #4
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Finishing my basement: wall insulation?


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So, paper side of the insulation facing the inside, against the backside of the drywall? That makes sense now that I think about it. How else would I install it!? Duh! What about Visqueen plastic sheet against the wall?
VB goes on warm side. Drywall, plastic, studs, and insulation.
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Old 09-14-2011, 10:04 PM   #5
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Finishing my basement: wall insulation?


No vapor barrier or vapor retarder asphalt paper-faced on walls below grade: http://www.buildingscience.com/docum...lation-systems

Removed in 2009 IRC - no vb in basements.

Gary
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Old 09-15-2011, 10:01 AM   #6
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Finishing my basement: wall insulation?


Thanks for the replies. They answered my questions.
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Old 09-15-2011, 11:29 AM   #7
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Finishing my basement: wall insulation?


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VB goes on warm side. Drywall, plastic, studs, and insulation.
DO NOT put in plastic!

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