United States / Build / Thermally Modified Ash Exterior Decking Boards sized ¾” x 5
Thermally Modified Ash Exterior Decking Boards sized ¾” x 5 This is a listed decking assembly. Listing 8110-2392:0001. This site cites SFM 12-7A-4. Match the model and orientation.
Listed. Derived from the cited listings by a published rule, never hand-assigned.
▲ CAL FIRE BML 8110-2392:0001 · active
Kind: listed-assembly.
Brand: Arbor Wood Co. . Listing evidence: OSFM WUI handbook 2026-08-25.
Page reviewed 2026-08-26. JSON (CC BY 4.0)
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Listing 8110-2392:0001 covers ash exterior deck boards in two sizes: three-quarter-inch by 5.5-inch and one-inch by 5.5-inch. Both are fastened to nominal two-by-six-inch southern yellow pine joists. These dimensions identify the boards and their support, so they need to remain together when matching a proposed deck to the listing.
The OSFM handbook prints Class B Flame Spread as the rating and SFM 12-7A-4A as the test protocol. That gives a purchaser a named assembly and a stated rating to check, without turning the ash material name alone into a complete specification.
Start with the required board size and the specified joists, then use Arbor Wood's instructions and product data sheets for installation. The live BML listing should be checked before specification to confirm the exact product being supplied. Keep the board dimensions, southern yellow pine support and manufacturer documentation with the selection so the finished deck follows the assembly described by the source.
On this page
Documents for this product Each link opens the publisher's own copy, so you read the revision they are shipping today.
Documented attributes Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.
Models named on the listing Model Application Thermally Modified Ash Exterior Decking Boards
Specification notes Listing is from the OSFM WUI handbook. Confirm the live GOVmotus record and the exact model before specification. Can I use this here How this product meets each requirement (13)
Requirement constraints (13)
Each table compares this product's documented attributes with one published requirement.
The comparison does not change from place to place, so it is printed once.
ORSC R327 noncombustible deck surface undocumented Field Required Documented value State Assembly role Assembly role = deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
Austin Zone A noncombustible appendage undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
IWUIC Class 1–2 noncombustible deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
Colorado CWRC Class A deck surface undocumented Field Required Documented value State Assembly role Assembly role = deck surface deck surface matched Fire rating Fire rating = class a Not documented undocumented
Colorado CWRC noncombustible deck surface undocumented Field Required Documented value State Assembly role Assembly role = deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
2018 IWUIC Class 1–2 noncombustible deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
Kittitas IR1–IR2 noncombustible deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
Kittitas IR1–IR2 one-hour deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Fire resistance Fire resistance ≥ 60 min Not documented undocumented
2021 IWUIC Class 1–2 noncombustible deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
2006 Utah UWUI Class 1–2 noncombustible deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Noncombustible Noncombustible = Yes Not documented undocumented
2006 Utah UWUI Class 1–2 one-hour deck undocumented Field Required Documented value State Assembly role Assembly role is one of deck structure, deck surface deck surface matched Fire resistance Fire resistance ≥ 60 min Not documented undocumented
Thermally Modified Ash Exterior Decking Boards sized ¾” x 5. FireApproved. https://fireapproved.com/materials/arbor-wood-co-thermally-modified-ash-exterior-decking-boards-sized-3-4/. Last verified 2026-08-26. Verify at the source. Every listing number and claim here links to its origin — listings change and local amendments govern, so check the current record before you specify.