Wall Assembly to Avoid Spray Foam
We are in the planning stages of our home in Northern Idaho(extreme mountain climate). We need to avoid spray foam, and are very sensitive to mold so must avoid an assembly that will create condenstation/moisture build-up. Considering the Huber R-12, with rock wool on the interior and a rain screen. Overwhelmed by dew point and all the extra considerations in this climate. Do I need exterior insulation as well? Siding will be either Hardi-Plank or cedar. Is there an optimal real world solution? We paid A LOT for a professionally designed wall assembly, but then couldn’t find a contractor willing to actually build it.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part