Passive house exterior wall
I am volunteering on a Habitat for Humanity project in a criminate zone 5 on the East coast. This chapter is building its first Passive house and I wanted to get some opinions on the exterior walls from the experts here.
The walls as shown on the drawings by the Architect are as fallows from inside to out 1/2” drywall, Intello Plus as primary air barrier, 2×6 framing 16”OC with dense pack celluloses, 5/8 CDX sheathing, Mento 1000, 2 layers of 2” foam, strapping and vinyl siding. The windows are outies.
The construction supervisor made the decision to change the second layer of foam to Zip-R12 providing a continuous layer for the vinyl siding. The plan is to install the Zip with 6” #10 deck screws 6” at the perimeter and 12” in the field.
Any concerns or comments on this system will be greatly appreciated.
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