Energy-efficient envelope advice
I’m building a high efficient cabin in climate 6 (dry) and have got a ton of helpful info from this site. I was hoping the the experts that frequent the site could make comments or give advice to improve the design. Also, let me know if there is something that doesn’t mesh with the current building science. Any input would be helpful, thanks.
Sealed crawl space with vapor barrier and 4” rigid foam insulating interior foundation walls.
Ground Floor System:
I joists with R30 batt insulation.
Above Grade Walls:
Double stud wall (exterior to interior): wood siding, 1/2” rain screen (1” x 3” furring strips), plywood with air and moisture barrier, 2×4 wood studs, 2-1/4” gap (to accommodate 2×12 bottom plate), 2×4 wood studs, wall cavity filled with dense pack cellulose, smart vapor retarder, gyp. board.
Windows and sliding doors:
Zola ThermoPlus Clad triple glazed windows.
Cathedral Roof & Ceiling:
Roof assembly exterior to interior: pre-finished standing seam metal roof, roof underlayment, plywood sheathing, 6” rigid foam, plywood sheathing, 12” batt. insulation, T&G wood ceiling.
HRV in crawl space. Three ductless mini-splits.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part