Video Demonstration

Water Vapor Transmission

ASTM E96

ASTM E96 states, "These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet materials, fiberboards, gypsum and plaster products, wood products and plastics."

Below you will find a video demonstration of the ASTM E96 testing process to determine permeability, performed at NTA, Inc.'s own IAS Accredited Test Lab. This test method is used to determine the perm rating, or the amount of water vapor that will diffuse through a material in the presence of a vapor pressure difference. This test is often performed to ensure code compliance of building products such as moisture barriers and housewraps. You can learn more about Water Vapor testing by contacting us.


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