Minimum R-values for exterior foam for 2×6 walls
I am building an Arctic entry with 2×6 walls, what is the minimum R-values for exterior foam over my OSB sheeting and house wrap to reduce the chance of moisture accumulation in the walls. I live in Wasilla Alaska, which is zone 7 with about 10,500 Annual Heating Days.
After completing the Arctic entry plan on removing siding and retrofitting all outside walls.
Thanks, all help/info will be appreciated
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