Conceptual air sealing strategy at upper floor band joist

The simplest way to ensure that all elements of your air barrierBuilding assembly components that work as a system to restrict air flow through the building envelope. Air barriers may or may not act as a vapor barrier. The air barrier can be on the exterior, the interior of the assembly, or both. system connect up is to take a footing-to-ridge cross section drawing of your building and connect the air barrier from the footing to the ridge without lifting your pencil or cursor. Typically, the tough spots will be transitions from one assembly to another (for example foundation to above-grade wall) and penetrations like windows and dormers. These details are a part of that process, keeping the pencil or cursor flowing from footing to ridge (or top floor ceiling).

DRAWING DETAIL

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