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Air-seal and insulate the rim and band joists of walls separating an attached garage from the home’s conditioned space.
Air-seal the floor above a garage when there is living space above the garage and make sure floor insulation is in full contact with the underside of the subfloor.
The air tightness of the garage-to-house air barrier can be tested with a blower door kit and two manometers
Wrong - No air barrier is present in the floor joists spanning over the garage and conditioned space of the home.
Wrong - The band joist above this garage-house shared wall is not properly sealed.
Wrong - The rigid foam that was installed as an air barrier at the rim joist was not properly air-sealed.