Polyiso designed for roofing OK in crawlspace?
onacurve
| Posted in Green Products and Materials on
I want to seal and insulate my crawlspace walls and rim joist area in an affordable manner, which for me is about as close to zero as possible. So I found a guy who has a bunch of used 4’x8’x1.5″, with black paper facing on both sides, for $5 per sheet. In looks like its pretty good shape from the photos I’ve seen and the price seems like 1/5 the retail price.
My question is: what is the purpose of the black paper facing and is it OK to use in spaces other than roof applications?
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Replies
David,
Q. "What is the purpose of the black paper facing?"
A. The facing protects the friable foam.
Q. "Is it OK to use in spaces other than roof applications?"
A. Yes.