Steve Baczek visits a Houston passive house with special guest Kevin McGuire of BT Grace Homes to break down the air barrier strategy behind the project. They discuss using ZIP System sheathing, ZIP R insulation, and Tyvek to create a continuous air barrier across the walls, roof, and interior partitions. The conversation focuses on how material choices, taped connections, framing details, and careful planning work together to meet passive house air-tightness requirements. Steve also explains how the assembly addresses insulation and condensation concerns in Houston’s climate, while Kevin shares how his team approaches blower door testing and execution in the field.

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