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Apa-The Engineered Wood Association

This is a listed siding assembly. Listing 8140-2020:0001. This site cites SFM 12-7A-1. Match the model and orientation.

“APA 303®” plywood siding with shiplap edges, nominal 19/32” thick (19/32 Performance Category) or greater and grooves spaced no closer than 4” on center or without grooves and manufactured with veneers of all Southern Pine or Douglas Fir face, back and center with cross piles of PS1 Group 1 or 2 species, 4’x8’ *or taller panel. Refer to the manufacturer's installation instructions and product data sheets.

Kind: listed-assembly. Brand: APA-THE ENGINEERED WOOD ASSOCIATION. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-23. JSON (CC BY 4.0)

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Documented attributes

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

AttributeValueEvidence source
Fire
Test standard sfm 12 7a 1 OSFM Building Materials Listing — 8140-2020:0001 (official-listing · Listing 8140-2020:0001, TEST PROTOCOL)TEST PROTOCOL: SFM 12-7A-1

Published requirement matches

These links are generated from the cited attributes above. They do not decide installation or a project result.

ProgramID / sourceEvidence dateExpiresStatus
CAL FIRE BML 8140-2020:0001 · Search BML for 8140-2020:0001 2026-08-25 2027-06-30 listed

Tests and programs cited

Specification notes

Sources

Apa-The Engineered Wood Association. FireApproved. https://fireapproved.com/materials/apa-the-engineered-wood-association/. Last verified 2026-08-23.