Rigid Foam Insulation/Vapor Barrier


Old 01-03-09, 08:57 AM
Thread Starter
Join Date: Mar 2005
Location: Minnesota
Posts: 31
Rigid Foam Insulation/Vapor Barrier

I am finishing my basement. Code is that I need a vapor barrier on the concrete block. I've been told that rigid foam board can be used instead of plastic sheeting.
Anyone have any experience with this?
I just don't want to do both & create a double barrier.
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Old 01-03-09, 09:32 AM
Join Date: Oct 2008
Location: New England
Posts: 9,995
The issue is more complex than it appears. Here is a link, that if you dig through it, you will find a cross section similar to your proposed construction. It may give you some insight as to what you need.
BSD-106: Understanding Vapor Barriers —

Good Luck

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