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Small Cabin Forum / Cabin Construction / vapor barrier
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Shadyacres
Member
# Posted: 28 Jan 2014 19:33
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Vapor barrier ? I know I will get differing answers on this but is it better to install Kraft faced insulation and no other vapor barrier ( say 6 mil poly) or is it better to install unfaced insulation and 6 mil poly ? Also , I was planning on placing drywall on my exterior walls and then 3/4 inch T & G pine. I checked with my code officer and he said I did not need the drywall if I used a vapor barrier between the insulation and the T & G. Does anyone have any opinions on this . I welcome all to join in. Mike

MtnDon
Member
# Posted: 28 Jan 2014 20:10
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Vapor barrier use / requirements are climate specific.

But everywhere can benefit from an air barrier. They are different and yet sometimes are the same.

Shadyacres
Member
# Posted: 28 Jan 2014 20:18
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I am in central PA , I always thought if you used kraft faced insulation , that was vapor barrier but I read so many different opinions so I'm not sure.

OwenChristensen
Member
# Posted: 28 Jan 2014 20:19
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Your building officer is right. I have always thought poly was much better than craft back in that it can be almost free of any leaks.

MtnDon
Member
# Posted: 28 Jan 2014 20:39
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Some of the best info on vapor and air barriers as well as insulation can be found on the website of buildingscience.com

Worth a look.

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