Double-stud walls and air barriers

Double-stud walls & Air barriers #green

I am working on the design of a double-stud wall residence (approx. 12" thick) in climate zone 6b and am currently detailing the air barrier & estimating costs on a variety of different products/approaches. The insulation will consist of dense pack cellulose and the exterior cladding will be lap siding on a ventilated rainscreen in some areas and vertical board & batt (basically a ventilated rainscreen on its own) in other locations. http://www.greenbuildingadvisor.com/blogs/dept/musings/one-air-barrier-o... I have previously reviewed your article on 1 vs. 2 air barriers (above) and am not 100% sure which side of the fence I sit on for that discussion. It seems that for double-stud walls there is a stronger case for 2 air barriers. The interior air barrier to reduce the chance of warm interior air hitting the obviously cold sheathing. (maybe most importantly for the double...

Full article: http://www.greenbuildingadvisor.com/community/forum/green...