BASC Search | Building America Solution Center

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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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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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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Air Conditioning

Guide

Guide describing refrigerant-based compression-cooling air conditioning systems for space cooling.

Sealed Crawl Spaces with Integrated Whole-House Ventilation in a Cold Climate

Reference

Report on hybrid ventilation methods for insulated and sealed crawl spaces.

Understanding Air Barriers, BSD-104

Reference

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

Ventilation Air Inlet Locations

Guide

Guide describing how to install ventilation air inlets in open locations at a safe distance from potential air contamination sources.

Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation

Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation

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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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Right – Metal or fiberboard duct is mastic sealed at junction with duct register box

Right – Metal or fiberboard duct is mastic sealed at junction with duct register box

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Plumbing penetrations through the below slab insulation are sealed with tape and spray foam.

Plumbing penetrations through the below slab insulation are sealed with tape and spray foam.

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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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Right – All seams in the sub-slab vapor retarder were sealed with tape.

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Right - Seam-sealing flashing tape is installed with roller to fully adhere to the OSB.

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This IR camera image shows a recessed can light that is well sealed and insulated.

This IR camera image shows a recessed can light that is well sealed and insulated.

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Air Barriers - Airtight Drywall Approach, Info-401

Reference

Brochure about creating an air barrier by sealing drywall assemblies.

Wrong - Vent hole has no cover or screening and is poorly sealed and flashed to siding.

Wrong - Vent hole has no cover or screening and is poorly sealed and flashed to siding.

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Wrong - Vent hole has no cover or screening and is poorly sealed and flashed to siding.

Wrong - Vent hole has no cover or screening and is poorly sealed and flashed to siding.

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Use caulk, foam or equivalent material to seal gap between partition wall

Use caulk, foam or equivalent material to seal gap between partition wall

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Right – Top plate to drywall connection sealed from attic with foam

Right – Top plate to drywall connection sealed from attic with foam

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Right – Top plate to drywall connection sealed from attic with caulk

Right – Top plate to drywall connection sealed from attic with caulk

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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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