I am interested in a good way to insulate exterior walls of a pole barn in Zone 5a
I have insulated in between the horizontal 2×6 purlins with 1 1/2 bead board with all joints taped and sealed to framing with can foam insulation. I am considering either fasting another layer of 2 inch pink board with all joints taped and sealed to framing with foam insulation, or having it sprayed with 2 inches of closed cell insulation. I also be framing 2×4 walls around the inside perimeter of the building with no other insulation in the walls with 24 inches of blowing cellulose in the ceilings.
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