Originally Posted by
John Pendery
In my climate zone the standard practice is open cell spray foam for walls and roof deck, closed cell is used below grade in crawl spaces and basement walls. .
Interesting given that open cell provides no vapor/moisture barrier and has half the insulation performance of closed cell per inch. Our climate here in SE PA is not all that different from where you live in KY (other than maybe more humid here in the Delaware Valley) and open cell is somewhat rarely used.
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The most expensive tool is the one you buy "cheaply" and often...