{"id":"det-008","license":"CC-BY-4.0","data":{"title":"Valley: 26-ga metal over D3909 cap sheet, layered","file":"/diagrams/det-008-valley-metal-over-d3909.svg","caption":"FA Exhibit DET-008. Valley: 26-gage metal over ASTM D3909 cap sheet.","alt":"A code-text layer stack and an intentionally not-to-scale valley section show corrosion-resistant metal valley flashing over a mineral-surfaced nonperforated ASTM D3909 cap sheet over combustible decking. A separate strip drawn at ten pixels per inch shows the cap sheet's minimum thirty-six-inch width and continuation for the full valley length.","kind":"diagram","rights":"cc-by-4.0","depicts":"Where Oregon R327 is in scope and valley flashing is installed, the code sentence specifies a three-part order over combustible decking: corrosion-resistant valley flashing at least 0.019 inch (0.48 mm), No","identifiableAddress":false,"exifGpsStripped":true,"derivation":"AFTER 2023 OREGON RESIDENTIAL SPECIALTY CODE R327.3 · WILDFIRE HAZARD MITIGATION-2.","technicalReviewer":"Grayson Graham","lastVerified":"2026-08-25T00:00:00.000Z"}}