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Remodeling the office (new floor, ceiling & adding insulation) passive house retrofit
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08-09-11, 11:58 PM
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strider3700
Master EcoRenovator
Join Date: Dec 2008
Location: Vancouver Island BC
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my used polyiso has some sort of paper backing that looks a lot like tar paper. I've never seen anything other then this but polyiso isn't the most common up here.
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