Transcription of ICC Vapor Perm Submit - iccsafe.org
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ICC Vapor Perm Submit - iccsafe.org
2016 ICC Annual Conference Education ProgramKansas City, MO1 Vapor Permeability of Materials & Assemblies Determining the When and Where of Vapor RetardersDr. Theresa WestonSenior Research FellowDuPont Protective SolutionsLearning Objectives Understand IBC and IRC Vapor retarder requirements and their development Understand Vapor permeability test methods Learn Vapor permeability ranges for common building materials Learn key considerations of hygrothermal analysis2016 ICC Annual Conference Education ProgramKansas City, MO2 IBC/IRC Vapor Permeability Requirements Classes of Vapor retarders Where Vapor retarders are required Where Vapor retarders are restricted Where Vapor permeable materials are requiredIBCVAPOR RETARDER CLASS. A measure of a material or assembly s ability to limit the amount of moisture that passes through that material or assembly. Vapor retarder class shall be defined using the desiccant method of ASTM E 96 as follows:Class I: perm or II: < perm < III: < perm <10 RETARDER CLASS.
2016 ICC Annual Conference Education Program Kansas City, MO 2 IBC/IRC Vapor Permeability Requirements • Classes of vapor retarders • Where vapor retarders are required • Where vapor retarders are restricted • Where vapor permeable materials are required IBC VAPOR RETARDER CLASS.
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