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Morris, IL | I'd go for that but the spray on foam i have no experience with. I'd skip the spray on foam and use either wet cellulose or fiberglass only, then vapor barrier on inside walls. Or instead of spray on foam use 1 1/2" foam board between the purlins including behind the posts.
I hate cellulose, had a a bad experience with it moving especially in the ceiling.
They say no vapor in ceiling but with cellulose you have to, I also can't figure out how to get vapor on ceiling before the steel.
My opinion, worth what you paid for it.
Edited by NEILFarmer 2/27/2012 21:26
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OK....this idea today on shop/office building insulation
