Wall Assembly-Very Cold Climate Zone 7
I live in northern Maine and will be building a passive solar home. I want to achieve r-50+. Here's a rundown on my proposed wall assembly with three thoughts in mind; 1. high thermal resistance, air tightness, economical as possible. Any ideas/suggestions would be appreciated.
Pine board cladding
WRB housewrap (ie. Tyvek)
2x4 outer stud wall (3.5" Roxul insulation) 24" OC
5.5" (or 7.25"?) cavity (Roxul insulation)-chase for electrical
Primary air barrier attached to inner wall (taped OSB treated with liquid vapor barrier)
2x4 inner stud wall (3.5" Roxul insulation)-load bearing wall 24" OC
Posted Sat, 12/29/2012 - 08:54
Edited Sat, 12/29/2012 - 10:29
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