How good is icynene insulation?
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Just finished framing a single story 800 sq.ft. addition to an old farmhouse. There’s been a big push around here for icynene insulation, a spray in low pressure foam that makes it sound like the best invention since the cordless drill. Cost is around $1 per sq. ft. of sprayed area. I especially like the idea of spraying the crawl space perimeter. Is it really as good as they say?