Double Stud Wall section
Although there is a lot of discussion and recommendations for double stud walls (R40) filled with dense packed cellulose walls on GBA, I could find no diagrams of a recommended wall assembly in your strategies and details section.
We are in the preliminary design phase for a two story house in Upstate NY (2,200 sq ft – first floor 1,500 sq ft), second floor 700 sq.ft.) (Zone 5a) built on an insulated (R20) floating slab and plan to have a vented roof (R60) with raised heel trusses over the two story portion of the house. I would like a sloped roof over the single story living area.
Is an internal or external load bearing assembly better? My builder says 2×6 are required for the outside wall, we can use 2 x 4 for the inside wall.
Recommendations on whether to use closed cell foam and where, exterior foam, sheathing type, etc.? Window details would be nice too.
I am looking for an effective and cost efficient design. A detailed wall section would be very much appreciated.
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