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Rigid Foam Insulation/Vapor Barrier

themnkid's Avatar

Join Date: Mar 2005
Posts: 31

01-03-09, 08:57 AM   #1  
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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Bud9051's Avatar

Join Date: Oct 2008
Posts: 9,764

01-03-09, 09:32 AM   #2  
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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