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Hardel Mutual Plywood Corporation

This is a listed siding assembly. Listing 8140-2303:0500. This site cites sfm-12-7a-1. Match the model and orientation. A listing is not a permit.

HardelPly plywood siding with shiplap edges, nominal 19/32" thick or greater, grooves spaced no closer than 4" on center or without grooves and manufactured with veneers of Okoume Hardwood face and back with Douglas Fir veneer core and center lines. 4'x8' or taller panel, installed on 2"x4" studs, 16" O.C., 7/16" exterior OSB sheathing, and fastened to the studs at 6" spacing on edge and 12" in the field. Refer to the manufacturer's installation instructions and product data sheets.

Kind: listed-assembly. Brand: Hardel Mutual Plywood Corporation. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-23. 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
Test standard sfm 12 7a 1 OSFM Building Materials Listing — 8140-2303:0500 (official-listing · Listing 8140-2303:0500, TEST PROTOCOL)

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 8140-2303:0500 · Search BML for 8140-2303:0500 2026-08-25 2027-06-30 listed

Tests and programs cited

Sources

Hardel Mutual Plywood Corporation. FireApproved. https://fireapproved.com/materials/hardel-mutual-plywood-corporation/. Last verified 2026-08-23.