Choosing wall assembly details
I’m asking this question for a neighbor. I have my theory but I would like to see what the general advises have to say.
Here’s the building:
located in central VT
double stud wall construction, rough cut 2×4 construction, total wall thickness around 8″
sheathing is diagonal rough cut 1×6
2 stories, full first floor and knee walls on second story
cellulose as bulk insulation
Looking to air seal this building on the exterior, was offered a spray membrane by the insulator but the technology doesn’t feel right. This product goes on the exterior.
My suggestion is a highly detailed wrb of “solitex mento 1000”
Then finish the interior with a highly detailed air tight drywall approach without a vapor barrier.
Would solitex mento 1000 provide a big enough improvement in air sealing over typar to warrant ordering it from brooklyn?
My other option, if air sealing is deemed a priority is to spray foam a 2.5″ to 3″ lift on the interior and fill the rest with cellulose. This way typar would be used as the wrb.
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