Mike Conneely walks through air sealing and insulation details during the rough stage of a high-performance home, focusing on where air leakage and heat loss typically occur. He explains how closed-cell spray foam is used strategically at corners, rim joists, steel beams, and framing connections to limit thermal transfer and improve the building envelope. Special attention is given to garage interfaces, foundation-to-framing joints, and complex roof and attic conditions where air barriers are hardest to execute. Exterior taping and weather-resistive barrier transitions reinforce the interior work, creating a continuous air seal across walls, floors, and roof assemblies.

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