Now that outsulation is “out,” what next?
Zone 5, Northeast US, two story residential home. Planning for exterior “true” cement stucco and areas of stone and brick veneer. After many permutations and consults, I have concluded, NO on outsulation. Two engineers, one architect, one stucco contractor, one mason and a few general contractors all said the same thing. The same thing that a while back was told to me here on GBA by Martin, “it is not proven and risky, be very careful”. Admittedly this is not the most forward thinking, green minded area of the country, my framer balked at advanced framing techniques and everybody looked at me like I had 3 heads when I suggested 2.5″ exterior rigid insulation. But that said, what’s the next step?
I want to achieve the same goals, a well insulated, high R-value wall that dries accordingly, inward and/or outward, 100 year design that is limited by a 2″x6″ stick framing wall.
That said, what to stuff in the bays is a debate, spray foam, (full wall vs flash and batt), blown cellulose, blown fiberglass, are all being considered. What should I consider to specifically disrupt thermal bridging? Is lining the studs (under the sheetrock) with 2″ wide strips of 1″ rigid XPS a fair idea, effective and worth the effort, to block transmission from the cold exterior to the sheetrock panels?
Any input on design is appreciated.
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