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EERE » BTO » Building America » Solution Center Home » 2.5 All other floors adjoining unconditioned space (e.g., rim / band joists at exterior wall or at porch roof).

2.5 All other floors adjoining unconditioned space (e.g., rim / band joists at exterior wall or at porch roof).

See the following guides for relevant information.

Air Sealing and Compartmentalization in Multifamily Buildings
Garage Rim/Band Joist Adjoining Conditioned Space
Walls Adjoining Porch Roof
Continuous Air Barrier in Exterior Walls