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What is an Airtight Drywall Approach (ADA)?

A building construction technique used to create a continuous air retarder that uses the drywall, gaskets, and caulking. Gaskets are used rather than caulking to seal the drywall at the top and bottom. Although it is an effective energy-saving technique, it was designed to keep airborne moisture from damaging insulation and building materials within the wall cavity.

U.S. Department of Energy

Source: http://www.thriftyfun.com/tf964589.tip.html

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