Subtopic 3.1802 Roof/Wall Connections

Continuous air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between roof and exterior walls where connection is within conditioned space

Rigid, airtight continuous air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary at overhang/wall interface