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vapor barrier

Posted by Fred in TX on December 31st, 2001 12:02 PM
In reply to Vapor Barrier by Ryan on December 30th, 2001 05:33 PM [Go to top of thread]

Hi Ryan,
I'm not an expert on this, but I had to study this subject when I insulated my exterior walls. There is a nationally known expert named Lsburick (sp?) who has a book called Moisture Control in Small Buildings. I only read the chapters that concerned my situation. He said it is important to have a moisture barrier in either a cold or warm climate to keep insullation dry. I finally used icynene, that acts as a vapor barrier, because I couldn't get a barrier any other way (removing siding). I'm in the hot part of TX and my vapor barrier goes on the outside of the insulation. If you are in a cold climate the vapor barrier goes on the inside. I found that some wallpapers have a low perm rating and can function as a vapor barrier. I didn't look into that much furter since it didn't apply to me, but I would guess that I would be wallpaper with some plastic in it.

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