Bidding a remodel on a “California Modern” house with low slope roof. 2×8 t&g over 4×12 exposed beams. No insulation. I’m getting roof bids for poyeurethane foam sparayed as part of a roofing system. Anyone know annyting about these? Do they hold up? How much insulation do you get from them??
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Do not know much about spray on roofing, but how about 3" or 4" polyisocyanite foam screwed to the decking and then apply whatever roof you choose. 4" is about $150 a square and is readily available at most roofing supply places. Rvalue of 25 or 28 on the 4", R 18.6 on the 3".
Bruce
I've dealt with two. One is 8-10 years old and leaks. One is 3 months old and leaks. See the post above.
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