Labels:bulletin board | sky | trade name OCR: Static Dew point Design On the next slide we have illustrated the point of how vapor migrates using permeation you can see We have wall assembly where the interior side on the left moving to exterior on the right The wall assembly consists board on the interior in this case foil faced thermal FG batt R-11 ir cavity gypsum sheathing on the exterior and an air space -then brick veneer you can see the vertical grey lines they de fine the transitions from one material to ano ther red line emphasizes the thermal batt insulation. that you can see what happening ir the thermal batt insulation Why? Because ir this case the dew point occurring in the fiberglass. This an undesirable location. Again the conditions here exterior on the right are OF 50% humidity On the interior the condi tions are 72F ...
