BASC Search | Building America Solution Center

Aerosol Envelope Sealing of Existing Residences

Reference

Report examining the effectiveness of an aerosolized acrylic technique for air sealing existing homes to reduce air leakage and improve energy efficiency.

Are We Sealing The Right Walls In Buildings?, BSI-108

Reference

Article describing air sealing and air barriers in buildings.

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.

Aerosol-Based Method Seals the Deal for Tighter New Homes

Reference

Fact sheet describing an innovative aerosol-based sealing technique for tightening building envelopes in new homes, involving pressurizing the structure and dispersing an aerosol sealant "fog" to autonomously identify and seal leaks, with real-time feedback through a standard blower door and laptop...

Fully Sealed Continuous Weather Resistance Barrier (3)

Video

Video describing how to fully seal a continuous weather resistance barrier.

Fully Sealed Continuous Weather Resistance Barrier (1)

Video

Video describing how to apply a fully sealed continuous weather barrier.

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.

Continuous Air Barrier in Exterior Walls

Guide

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

Foam holes in open-web floor trusses to completely seal the rim joist

Foam holes in open-web floor trusses to completely seal the rim joist

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Understanding Air Barriers, BSD-104

Reference

Information sheet providing definitions, applications, and techniques for applying air barriers.

Right – Every seam and nail hole in these garage-to-house walls is sealed with tape.

Right – Every seam and nail hole in these garage-to-house walls is sealed with tape.

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Wrong - Plumbing penetrations are not sealed in sub-floor and it is not recommended to run plumbing in a cantilevered floor.

Wrong - Plumbing penetrations are not sealed in sub-floor and it is not recommended to run plumbing in a cantilevered floor.

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Air Barriers - Airtight Drywall Approach, Info-401

Reference

Brochure about creating an air barrier by sealing drywall assemblies.

Roof/Attic to Exterior Wall Air Control Upgrade

Guide

Guide describing how to retrofit an exterior wall and/or attic to provide continuous air sealing.

Wrong - Foil air barrier was ripped to install wiring; foil should be replaced with a solid air barrier and wiring hole should be caulked.

Wrong - Foil air barrier was ripped to install wiring; foil should be replaced with a solid air barrier and wiring hole should be caulked.

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Glasswood Commercial Passive House Retrofit: Air Barrier

Video

Video describing the air barrier installed in a passive house.

Vented Attic vs Unvented Cathedral Attic Air Flow

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Air Barriers - Tub, Shower and Fireplace Enclosures, Info-407

Reference

Brochure about creating an air barrier at tub, shower and fireplace walls.

Wrong - The band joist above this garage-house shared wall is not properly sealed.

Wrong - The band joist above this garage-house shared wall is not properly sealed.

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Technology Solutions Case Study: Complete and Fully Aligned Air Barrier

Case Study

Case study describing the elimination of excessive humidity in the attic of a multi-floor, single-family home that was causing condensation and water damage along the roof and eaves.

Your Northern Home: Attics/Air leakage/Stack effect

Video

Video from Cold Climate Housing Research Center on how warm air typically leaks out of homes through attics via the stack effect and how to mitigate these effects through building practices.

Right – This attic knee wall and the floor joist cavity openings beneath it are being sealed and insulated with spray foam.

Right – This attic knee wall and the floor joist cavity openings beneath it are being sealed and insulated with spray foam.

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High Performance Building Details - Garage Band Joist Air Barrier

Reference

Information sheet about air barriers.

Right – Coated OSB provides a weather-resistant air barrier for this envelope of this home.

Right – Coated OSB provides a weather-resistant air barrier for this envelope of this home.

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The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

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Pumpkin Ridge Passive House Video #012: Interior Attic Air Barrier

Video

Video describing the interior attic air barrier details in a passive house.

Right – The seams are taped on the coated OSB sheathing of this home to provide a complete air barrier.

Right – The seams are taped on the coated OSB sheathing of this home to provide a complete air barrier.

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Hygrothermal Performance Study: A Field Study Comparison of the Energy and Moisture Performance Characteristics of Ventilated Versus Sealed Crawl Spaces in the South

Reference

Report outlining results from a 2005 hygrothermal pilot study in the South.

Pumpkin Ridge Passive House Video #007: Wall-To-Roof Air Barrier Details

Video

Video describing the wall-to-roof air barrier details of a passive house.

The home is sheathed with rigid foam insulation and all seams and holes are taped to provide a continuous air barrier.

The home is sheathed with rigid foam insulation and all seams and holes are taped to provide a continuous air barrier.

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