BASC Search | Building America Solution Center

Wrong - Common wall sheathing not properly fastened or sealed

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Wrong – Penetration hole is larger than duct and not sealed

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Air Leakage Testing Garage to House Air Barrier

Guide

Guide describing how to properly test the air barrier between the garage and house, and how to ensure the air barrier is tight enough to prevent garage air from entering the home.

Right - All gaps and joints are sealed to provide an airtight construction.

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Continuous Air Barrier in Exterior Walls

Guide

Guide describing how to install continuous air barriers in exterior walls.

Wrong - Flex duct is improperly attached and sealed to duct boot.

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RIght - Seams in duct boot elbow are fully sealed with mastic.

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Right – The vapor barrier is thoroughly sealed with tape at all seams.

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Right – The round metal ducts are sealed with mastic at all joints.

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Right – Closed-cell spray foam seals the wall cavities.

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Right – All wood-to-wood joints are sealed with caulk.

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Right – These duct take-offs are well sealed to the branch duct

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Use sheet goods to seal holes around drain pipes under the tub

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Selecting Healthy Insulation and Air Sealants

Presentation

Webinar from Rebecca Stamm of Healthy Building Network and Roberto Valle of HomeFree describing policies surrounding environmental and human health impacts of insulation and air sealing materials. Free EEBA login required.