Labels:clock | dialog box | hakham | poster | sky | web site | window OCR: Condensation Problem Solved By Foam Solution: Air Sealing using foam insulation prevents moisture vapor from contacting the cold steel roof deck. In scientific terms the condensing plane becomes the surface of the foam which is tthe same temperature the interior of the building Since there dew point there is no condensation This IS borne out by psychrometric charts which clearly define the temperature and relative humidity parameters Soft foam insulation can move with the thermal expansion and contraction of the steel roof. Open cell foam IS superior to closed cell because although it is air barrier and prevents the passage of airborne moisture vapor liquid water from roof leaks can pass straight through. <PREV NEXT psvchrometric insulatior CPREV
