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Air sealing


Technology Description

Systematic sealing of air leakages throughout the building surface (and particularly around cracks, small holes, plumbing, wiring, lighting and ductwork) to reduce heat loss and better control humidity. This needs to be coupled with appropriate ventilation.
Technologies: foam, caulk, tape or gaskets.

Relevance for Net Zero

High energy savings potential at low cost, improved comfort, improved indoor air quality (reduced humidity, dust, pollen, etc) and increased durability (avoided moisture and condensation).

Key Countries

United States

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