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bobbotron
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# Posted: 20 Dec 2012 02:29pm
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So, we're installing T&G pine panelling over a 6mil vapour barrier. I just went through all this hassle of sealing the VB. I assume I'm not to worry about the fact I have to nail through it to install the panelling? Short of putting a line of acoustic sealant on each stud (ugh, eww), I don't know how you'd get around that.
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wakeslayer
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# Posted: 20 Dec 2012 02:46pm
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It won't make a difference. You are compressing the hole between two hard surfaces.
I believe that here in MN a few years ago, contractors were slitting the vapor barrier after inspections to allow a little breathing to prevent mold in a perfectly sealed home.
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bobbotron
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# Posted: 20 Dec 2012 03:08pm
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Thanks wakeslayer! That's what I thought, and what google was telling me after I posted this. (And figured out what to search for.)
Figured I'd ask before we did it all and realized we'd bodged it. ;)
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MtnDon
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# Posted: 20 Dec 2012 03:51pm
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Quoting: wakeslayer I believe that here in MN a few years ago, contractors were slitting the vapor barrier after inspections to allow a little breathing to prevent mold in a perfectly sealed home.
IMO, if they had done their job right they would not need to do that. Doing it right though means more than sealing tightly, it means providing for proper, heating, cooling and ventilation. They are not providing ventilation by slitting vapor barriers; they are making air leaky homes. There is a difference.
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wakeslayer
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# Posted: 20 Dec 2012 05:18pm
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I cannot speak to that. I am not in the industry. That could well be. My guess is it had to do with our humidity levels here and then the difficulty in getting that equation correct.
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