Showing results 1 - 18 of 18
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Air seal around all duct shafts and flues installed through ceilings, walls, or flooring to keep conditioned air from leaking into unconditioned space.
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Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam
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Duct boot is air sealed to ceiling by covering the seam with fiberglass mesh tape and mastic
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Duct/pipe penetration with metal cap flashing and wood blocking for trim attachment
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Fiberglass mesh tape is installed around a duct boot in preparation for air sealing with mastic
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Plan view of duct or pipe penetration through exterior wall showing flashing and air sealing details
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Right - The duct shows redundant sealing including the caulk, tape, and flashing
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Right - This duct penetration is properly flashed and integrated with the taped, foil-faced foam sheathing layer, which serves as the air and water barrier
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Right – Chase capped with rigid air barrier and duct work penetrations properly sealed
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Right: Refrigerant piping is sealed where it exits the return plenum
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Wrong – the exhaust terminal for a clothes dryer should not be covered with a screen which could trap lint; instead, cover it with a hooded, louvered damper
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