Walls, zone 6, Montana
My husband recently said that he would be okay with putting 2 inches of exterior insulation. We are putting up our ICF basement. I can’t get him to put down insulation in the slab. (I’ve given up on that argument.)
Anyway, we are going to have 4×6 was prebuilt by the Amish. I believe they use plywood on the outside. So, what would be easiest most cost effective solution for the exterior walls? I would like to use Rockwool, but I think I might be able to convince him more on using Polyiso boards (2inches).
I’m feeling conflicted over costs and easy of insulation, and effectiveness.
We plan on using corregated metal siding. Would we have to use furring (sp?) Strips?
We need to know these details to order windows and get thermal bucks.
Also, would you use blown in cellulose rather than spray foam? I want good R value but to have safe air as well.
I also get confused on air/water barriers. I sort of need an exact sandwich of insulation suggestion from exterior to interior.
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