PGH Book Wall Assemblies-Vapor variable membranes p.119

“..these membranes are composed of materials that become less permeable as humidity increases on its interior side and more permeable as the air dries.””… but in general they are designed… “..these membranes are composed of materials that become less permeable as humidity increases on its interior side and more permeable as the air dries.””… but in general they are designed…Read MoreGreenBuildingAdvisor