BASC Search | Building America Solution Center

Right – This crawlspace window was completely sealed off on the inside and outside with air barrier and water-proof materials and the window well was filled in to an above-grade height to prevent bulk water from entering the crawlspace

Right – This crawlspace window was completely sealed off on the inside and outside with air barrier and water-proof materials and the window well was filled in to an above-grade height to prevent bulk water from entering the crawlspace

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Field Trial of an Aerosol-Based Enclosure Sealing Technology

Reference

Report presenting the results from several demonstrations of a new method for sealing building envelop air leaks.

Right – Neatly cut and sealed penetration

Right – Neatly cut and sealed penetration

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Wrong – Vent sleeve not completely sealed

Wrong – Vent sleeve not completely sealed

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Seal all penetrations through the band joist

Seal all penetrations through the band joist

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Right – Flex duct register is mastic sealed to framing

Right – Flex duct register is mastic sealed to framing

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Technology Solutions Case Study: Apartment Compartmentalization with an Aerosol-Based Sealing Process

Case Study

Case study describing air sealing building enclosures using aerosolized sealant.

Right: Refrigerant piping is sealed where it exits the return plenum

Right: Refrigerant piping is sealed where it exits the return plenum

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Wrong – Penetration hole is larger than duct and not sealed

Wrong – Penetration hole is larger than duct and not sealed

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Right – Wiring penetrations have been neatly sealed with foam.

Right – Wiring penetrations have been neatly sealed with foam.

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Wrong – Hole was not neatly cut with a saw, making it difficult to seal.

Wrong – Hole was not neatly cut with a saw, making it difficult to seal.

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Right – Wiring penetrations have been neatly sealed with foam.

Right – Wiring penetrations have been neatly sealed with foam.

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Right – Wiring penetrations have been neatly sealed with foam.

Right – Wiring penetrations have been neatly sealed with foam.

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Right – Kitchen exhaust penetration has been sealed with caulk

Right – Kitchen exhaust penetration has been sealed with caulk

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Wrong – This recessed can light has not been sealed to the drywall.

Wrong – This recessed can light has not been sealed to the drywall.

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Right – The recessed can light penetration is sealed with caulk to the drywall.

Right – The recessed can light penetration is sealed with caulk to the drywall.

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Right – The holes for plumbing are neatly cut and properly sealed with foam.

Right – The holes for plumbing are neatly cut and properly sealed with foam.

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Right - The duct shows redundant sealing including the caulk, tape, and flashing

Right - The duct shows redundant sealing including the caulk, tape, and flashing

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Caulk applied against the backer rod to seal a window rough opening

Caulk applied against the backer rod to seal a window rough opening

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Right – Neatly cut holes have been properly sealed with foam.

Right – Neatly cut holes have been properly sealed with foam.

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Right – Penetrations have been neatly cut and properly sealed with foam

Right – Penetrations have been neatly cut and properly sealed with foam

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Right – This neatly cut hole has been properly sealed with foam.

Right – This neatly cut hole has been properly sealed with foam.

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Right – This hole has been neatly cut and properly sealed with foam.

Right – This hole has been neatly cut and properly sealed with foam.

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Wrong – Roughly cut hole that is larger than the fan, making it difficult to seal

Wrong – Roughly cut hole that is larger than the fan, making it difficult to seal

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Wrong – Roughly cut hole that is larger than the fan, making it difficult to seal

Wrong – Roughly cut hole that is larger than the fan, making it difficult to seal

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Right – These neatly cut holes have been properly sealed with caulk and foam.

Right – These neatly cut holes have been properly sealed with caulk and foam.

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Whole house fans draw cool night-time air in through open windows and expel hot house air into the vented attic

Whole house fans draw cool night-time air in through open windows and expel hot house air into the vented attic

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Your Northern Home: Air Leakage/ Blower Door Test

Video

Video describing a house air leakage test and the most common leakage sources for an Alaskan house.

Wrong – These holes have been cut larger than needed, making them difficult to seal.

Wrong – These holes have been cut larger than needed, making them difficult to seal.

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Wrong - The opening in the foundation wall around this pipe has not been sealed allowing entry for rodents and bugs

Wrong - The opening in the foundation wall around this pipe has not been sealed allowing entry for rodents and bugs

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