Roof insulation in Montana
I wanted to ask a quick question for my sister in Whitefish MT. They are having their insulation re-mediated after a disastrous install last year which led to both ice dams and mold. The roof is a mix of attic and vaulted ceiling. The new proposed solution is to spray 7″ of closed cell foam underneath the roof sheathing to create a conditioned space–which is a big improvement. However, they have had a hellish experience and I wanted to check with this forum that this is all that will be needed. They plan to install drywall with recessed light canisters afterwards.
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