FA Exhibit DET-020

Garage door perimeter: the gap inventory + weatherseal retrofit

A garage door elevation identifies the header, both jambs, and bottom as one continuous perimeter. NTS details compare an open ember path with gasket contact and distinguish IBHS model language from adopted local code. — FA Exhibit DET-020. Garage door perimeter gap inventory and weatherseal retrofit. profile shown diagrammatically. Illustrative — not a construction document. Verify with your building official. CC BY 4.0.

Technical review: Grayson Graham. Last verified 2026-08-25. JSON

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