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Benchmark Oak thermally modified wood decking with square edge

This is a listed decking assembly. Listing 8110-2135:0503. This site cites cal-fire-bml. Match the model and orientation. A listing is not a permit.

Thermory USA LLC listing 8110-2135:0503 in OSFM category 8110 (decking for wildland urban interface (w.u.i)). Benchmark Oak thermally modified wood decking with square edge, nominal 5/4" x 6" (1" x 5-1/8" actual) or wider. Installed on nominal 2" x 6" Douglas fir joists with a maximum of 1/4" edge-to-edge spacing. Refer to the manufacturer's installation instructions and product data sheets.

Kind: listed-assembly. Brand: Thermory USA LLC. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-26. JSON (CC BY 4.0)

Documented attributes

Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.

AttributeValueEvidence source
Material wood CAL FIRE OSFM Building Materials Listing — 8110-2135:0503 (official-listing · Listing 8110-2135:0503, Description field)
Assembly role deck surface CAL FIRE OSFM Building Materials Listing — 8110-2135:0503 (official-listing · Listing 8110-2135:0503, Description field)
ProgramID / sourceEvidence dateExpiresStatus
CAL FIRE BML 8110-2135:0503 · Search BML for 8110-2135:0503 2026-08-25 2027-06-30 listed

Tests and programs cited

Sources

Benchmark Oak thermally modified wood decking with square edge. FireApproved. https://fireapproved.com/materials/thermory-usa-llc-benchmark-oak-thermally-modified-wood-decking-with/. Last verified 2026-08-26.