Just had a 30' X 30' X 10' metal building with one walk through door done with 5'' of open cell on the walls and 2'' of closed cell on the roof. $6,100. I added an R15 batt in the walls on top of the foam.
My thoughts are, if you are going to have walls and ceilings save your money and go with batt insulation. I have the above building done with foam on the ceiling and two other buildings done with the regular vinyl backed insulation and ceiling temperatures are within 5 degrees of each other. Spray foam sucks for sound deadening also. I will never have another building foamed.
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