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Air seal around all wiring installed through walls, ceilings, and flooring to keep conditioned air from leaking into unconditioned space.
Right – Neatly cut hole has been properly sealed with foam
Right – Wiring penetrations have been neatly sealed with foam
Right – Wiring penetrations have been neatly sealed with foam
Right – Wiring penetrations have been neatly sealed with foam
Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes
Wrong – Hole has not been air sealed
Wrong – Hole was not neatly cut with a saw, making it difficult to seal
Wrong – Holes have been cut larger than needed, making it difficult to seal