Under-deck mesh — outer edge versus under the boards
FA Exhibit DET-005. Guidance language, not an R327 mesh-orientation rule. After IBHS Wildfire Prepared Home technical standard and FEMA P-737. Illustrative — not a construction document. Verify with your building official. CC BY 4.0.
Technical review: Grayson Graham. Last verified 2026-08-23. JSON
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<img src="https://fireapproved.com/diagrams/det-005-under-deck-mesh-pair.svg" alt="Two deck sections. One encloses the outer edge from walking surface to grade. The other lays mesh horizontally under the boards and leaves the side open." />