I'm not sure. I just keep foam, guns and caulk inside when not in use. I hope the top side of my sheet rock is above freezing :/. Usually the problem is that things are too warm up there. That's why air sealing is needed. I just saw a house with no insulation in the attic at all see a blower door reduction of 4,600 CFM 50 to 1,100 CFM 50 with common air sealing techniques. I have seen large expanses of two part foam fail. That is corrected by spraying water on the surface first.
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Chipping away on a daily basis.
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You know you're an ecorenovator if anything worth insulating is worth superinsulating.
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S-F: "What happens when you slam the door on a really tight house? Do the basement windows blow out?"
Green Building Guru: "You can't slam the door on a really tight house. You have to work to pull it shut."
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