"This insulation may be installed correctly. There are way too many variables in play to give you the "right answer". Yes, un-faced bats in joist cavities is not pretty, but is probably the best one size fits all answer for…"
"Some one citing Joe Lstiburek. Good work.
I think most of us jump to assumption that might not be true. The insulation does not have to fill the cavity to be effective. BUT or IF or ONLY WHEN. First of all we are talking…"
"Okay. 2 things.
Number one: Radon mitigation actually exhaust from outside the building envelope. An ERV is a VERY bad idea. We could argue about technology and cross talk, but generally foundation radon ventilation should…"
"Short answer: spray about an inch to the roof deck and gable walls. Take specific note of any fire rated surfaces and know the foam will potentially lessen that rating.
Long answer is that you should think hard about air, ventilation and the…"
"Technically EPS is "structural". PolyIsoCyanurate is more compressible. It also doesn't do well with shear, tension, hence the foil face. There is also a famous story about the failure of the Green Roof on the Ford Factory that…"
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