Oklahoma Barndominium Insulation Flash and Batt?
I’m beginning to build a Post Frame wood/metal panel exterior dwelling 50′ x 112′. Of that space, 50′ x 32′ x 20′ (tall) will be a 2-story living area. The remaining will be shop/garage space. Walls will be 2×6 construction.
Closed cell is popular here in Oklahoma (Zone 3). Most applicators recommend 2″ walls and 3″ in the roof. I’ve come across the flash and batt method with mineral wool as an alternative. Some folks seem to just be using the wool and no foam. The wool is far less expensive and most of the labor could be DIY.
Opt 1: closed cell foam only
Opt 2: closed cell foam with mineral wool combo
Opt 3: your alternate recommendation
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