Controlling moisture vapor within walls is a balance between minimizing wetting and maximizing drying ability. Correct selection and placement of vapor retarders can prevent excessive moisture vapor and potential condensation in wall assemblies.
In the building industry’s ever increasing pursuit of tighter and more waterproof structures, is there a point at which a wall is built too tight? While a watertight assembly is vitally important for wall controlling issues such as mold growth and protecting IAQ, some building practices may be inadvertently making it easier for moisture-related issues to fester.
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