Water Vapor Migration 101: The Basics of Vapor Retarders

April 21, 2016
Publication: Building Design + Construction

Vapor retarders play an important role in controlling water vapor flow and can be a major element in durable building enclosure design. (Note: Although there is some debate in the industry over terminology, “vapor barrier” and “vapor retarder” are used interchangeably here.) Experience shows that water vapor movement through building enclosure systems can result in problems in any climate – not just cold climates – where there is a difference in moisture levels between the interior and exterior. 

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Keywords: Moisture Control