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Re: GBlist: vapor permeability
--- You wrote:
Icynene is already a vapor retarder material
--- end of quoted material ---
From Icynene literaure: Due to its open cellular structure, Icynene "breathes"
water vapor easily.
Its perm rating at 5 inch thickness is 10 - not considered a vapor retarder.
Marc Rosenbaum
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