Air barrier / Discussions

...air pressure inside the house, wind will create a negative pressure on the opposite side of a home and draw air from that wall. Air pressure in the home will also be affected by any mechanical exhaust you have like a central vac, stove hood, bathroom fans, etc. The natural stack effect of warm air rising will create a ...

...air barrier in that wall assembly, a peel and stick membrane on the exterior sheathing (seen below).  The confusion over managing air and vapour movement comes from the fact that usually one product (6-mil polyethylene) is  used as both the vapour barrier AND air barrier, but air leakage and vapour diffusion are act...