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  • Vents and vapor retarders for roofs 

    Tobiasson, Wayne. (Cold Regions Research Engineering Laboratory (U.S.)Engineer Research and Development Center (U.S.), 1986-12)
    Introduction: Vents and vapor retarders are features incorporated into roofing systems to prevent moisture from condensing within the roof. The need for vents and vapor retarders in building envelopes depends on the climate ...
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