MyFloridaCode.com

Well, I just googled "open cell foam and vapor barrier" and most all the
sites mentioned needing a vapor barrier with open cell.  Based on other
research I've done in the past, I figured most of these were mainly geared
toward the colder climates but wanted to make sure.  


-----Original Message-----
From: Joseph Lstiburek [mailto:joe at buildingscience.com] 
Sent: Saturday, February 06, 2010 1:23 PM
To: Ken Rodgers
Cc: codetalk at myfloridacode.com
Subject: Re: [Florida Code Talk] Vapor Barrier

An interior vapor retarder is not required in ICC climate zones 4 or lower.

I am curious as to what research you have done regarding a vapor 
barrier over open cell foam?


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>	boundary="----=_NextPart_000_0052_01CAA72C.7C932C60"
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>Can someone give me the code reference for interior vapor barrier 
>requirements over insulation.  I'm specifically trying to find the 
>requirement (if any) for a vapor barrier over open cell foam.  The 
>research I've done seems to indicate the need for a vapor barrier 
>over open cell but there seem to be a few other opinions out there 
>as well with regards to our part of the country.  Just wondering if 
>the code addresses this specific situation.  I'm sure this question 
>will also spark a good foam vs. anti-foam debate so I look forward 
>to learning from that as well.
>
>Thanks
>
>Ken
>
>
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