BASC Search | Building America Solution Center

Wrong – Air barrier is not air sealed

Wrong – Air barrier is not air sealed

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Right – Air barrier is air sealed

Right – Air barrier is air sealed

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Air Sealing Attached Garage

Guide

Guide describing ways to air-seal an attached garage in new and existing homes.

Air Sealing Sill Plates

Guide

Guide describing how to air-seal sill plates in single-family homes and multifamily buildings.

Wrong – Air barrier not sealed

Wrong – Air barrier not sealed

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Right – Air barrier sealed

Right – Air barrier sealed

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Air Sealing Multifamily Party Walls

Guide

Guide describing how to air-seal common walls between dwelling units in multifamily housing.

Air Sealing Drywall to Top Plate

Guide

Guide describing ways to seal drywall to the top plate of an exterior wall to air-seal the wall cavity.

Air Sealed, Insulated Basements

Guide

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and HVAC equipment.

Air Sealing Duct and Flue Shafts

Guide

Guide describing how to air-seal duct and flue shafts.

Right – Vent and air barrier sealed

Right – Vent and air barrier sealed

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Wrong – Electrical box not air sealed

Wrong – Electrical box not air sealed

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Air Sealing Bathroom and Kitchen Exhaust Fans

Guide

Guide describing how to air-seal bathroom and kitchen exhaust fans.

Air Sealing Modular Home Marriage Joints

Guide

Guide describing how to air-seal modular home marriage joints.

Right – Wiring penetrations properly air sealed

Right – Wiring penetrations properly air sealed

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Air seal the common wall between units in a multifamily structure to minimize air leakage.

Air seal the common wall between units in a multifamily structure to minimize air leakage.

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Wrong – This seam along a common wall is not air sealed.

Wrong – This seam along a common wall is not air sealed.

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Right – This seam along a common wall is air sealed.

Right – This seam along a common wall is air sealed.

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Right – The knee wall is properly insulated and air sealed.

Right – The knee wall is properly insulated and air sealed.

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Air Sealing Structural Insulated Panel (SIP) Seams

Guide

Guide describing how to correctly seal structural insulated panel (SIP) seams.

Air-seal drywall to top plates at all attic/wall interfaces to minimize air leakage.

Air-seal drywall to top plates at all attic/wall interfaces to minimize air leakage.

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Air-seal above-grade sill plates adjacent to conditioned space to minimize air leakage.

Air-seal above-grade sill plates adjacent to conditioned space to minimize air leakage.

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Wrong - There is no foam gasket or air-sealing beneath the sill plate.

Wrong - There is no foam gasket or air-sealing beneath the sill plate.

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Right – The backing on this knee wall was air sealed prior to insulation.

Right – The backing on this knee wall was air sealed prior to insulation.

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Seal the drywall to the top plates as part of the home’s continuous air barrier

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Wrong – Rigid air barrier not properly sealed around skylight shaft

Wrong – Rigid air barrier not properly sealed around skylight shaft

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Right – Rigid air barrier properly sealed around skylight shaft

Right – Rigid air barrier properly sealed around skylight shaft

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Wrong – The backing on this knee wall was not air sealed prior to adding insulation.

Wrong – The backing on this knee wall was not air sealed prior to adding insulation.

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Wrong – Air barrier not sealed between porch attic and conditioned space

Wrong – Air barrier not sealed between porch attic and conditioned space

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Wrong – Air barrier not sealed between porch attic and conditioned space

Wrong – Air barrier not sealed between porch attic and conditioned space

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