Labels:hakham | sky | trade name | window OCR: Pressure Differences Drive Moisture pressure Air pr essure between in Diff erence between and out drives moisture in and out drives air vapor into the wall cavity into the wall cavity Warm 'humid high Where war m. 'humid pressure Colc dn low air meets col Id/ dry pressure air may cond ens moi ture the wall. The amount moisture measured by measured perm' Slide #21 ALA Continuing Education Steel Stud Moisture Resistance XPS vabor Cold oressure ense flow Understond Resstancs
