dhutton01
Backyard Hack
I am far from an expert but I worry about condensation forming with open cell on a steel building. I have seen closed cell followed by open cell to prevent condensation.I got a quote yesterday to do my 30x50x12 at 4500$. He recommended 3-4 inch of open cell for the roof and 1 inch closed on the walls, and 2 inch closed on the west wall. Says he been doing it 30yrs and recommended open cell on roof because he can go much thicker at a cheaper cost......debating.
Don