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2025 California WUI Code SFM 12-7A-1 exterior-wall path

The 2025 California Wildland-Urban Interface Code includes exterior-wall assemblies meeting SFM Standard 12-7A-1 performance criteria.

A matching test protocol is product evidence, not a generic listing mandate. Exact model, complete tested assembly, framing, sheathing, cladding, installation, current listing status, local amendments, and approval remain checks.

code · California mapped fire hazard areas · Last verified 2026-08-27 · JSON (CC BY 4.0)

Published requirement text

“Wall assemblies that meet the performance criteria in accordance with the test procedures for a 10-minute direct flame contact exposure test set forth in SFM Standard 12-7A-1.”

2025 California Wildland-Urban Interface Code construction notes, Section 504.5 — Town of Truckee public record

Where this instrument is documented

Instrument cwuic-2025.

Set a location to read how this instrument lands where you are.

Place	Force	Reach	Dated	Checks open	Source
California	active application documented	mapped area	effective 2026-01-01	3	Building in the Wildland

Each place page carries that place's boundary, project scope and open official checks in full; this page's JSON twin carries them per application.

Machine-readable constraints

Attribute	Operator	Value
testStandard	eq	sfm-12-7a-1

Products with documented matching attributes

Open the Build rules that quote this requirement

Product	Category	Status	Documented match evidence
“MOSO Bamboo Thermo Siding" boards are made of compressed thermally treated bamboo strips	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2278:0504, TEST PROTOCOL
7" Clapboard Celect Cellular PVC Siding	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2339:0500, TEST PROTOCOL
ACRE Shiplap Siding, brown color, tongue & groove, 1" thick x 6" wide	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2385:0001, TEST PROTOCOL
Apa-The Engineered Wood Association	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2020:0001, TEST PROTOCOL
Blocks and Cutstock (8140-2126:0100)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2126:0100, TEST PROTOCOL
Boral TruExterior® Siding in profiles Channel Bevel, V-Rustic, Cove/Dutch	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2134:0105, TEST PROTOCOL
Canyon Lumber Company (8140-2380:0001)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2380:0001, TEST PROTOCOL
ChamClad® 6-inch rigid PVC wall-panel assembly	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2381:0001, TEST PROTOCOL
D4STD Market Square Double 4" Vinyl with PVC Capstock Siding	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2339:0501, TEST PROTOCOL
Davinci Roofscapes, LLC	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2272:0501, TEST PROTOCOL
EPC-SID18-137TG-PP Classic Espresso 1 x 7 siding shiplap fused bamboo using Eisen Sheathin	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2216:0502, TEST PROTOCOL
Fiberon® Wildwood™ composite cladding	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2045:0504, TEST PROTOCOL
Hardel Mutual Plywood Corporation	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2303:0500, TEST PROTOCOL
ITI Chile (8140-2234:0501)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2234:0501, TEST PROTOCOL
ITI Chile (8140-2234:0502)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2234:0502, TEST PROTOCOL
Martco Plywood	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2138:0100, TEST PROTOCOL
Mastic Quest Vinyl Siding (Non-Weathered) PVC siding with dimensions of 144" x 10"	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2070:0004, TEST PROTOCOL
Mastic Structure Vinyl Siding (Non-Weathered) insulated PVC siding with dimensions of 12'6	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2070:0005, TEST PROTOCOL
Millboard Envello, Board & Batten+, and Shadow Line+ siding board profiles are made of a r	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2379:0002, TEST PROTOCOL
MOSO Bamboo X-Treme compressed bamboo exterior wall siding and sheathing	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2278:0505, TEST PROTOCOL
Nusku Partners LLC (8140-2064:0501)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2064:0501, TEST PROTOCOL
Nusku Partners LLC (8140-2064:0503)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2064:0503, TEST PROTOCOL
P44V and P46V in 4" and 6" widths	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2361:0001, TEST PROTOCOL
Paneltek 1-course Cedar Shingle Panel siding 5-3/8 in. or greater exposure	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2246:0502, TEST PROTOCOL
Paneltek Engineered Cedar T&G external wall panel siding use in Wildland-Urban Interface A	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2246:0501, TEST PROTOCOL
Shakertown (8140-2032:0003)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2032:0003, TEST PROTOCOL
Solid Wood Red Grandis Tongue and Groove Siding, material nominal 1" x 6", 1" x 8"	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2318:0500, TEST PROTOCOL
Superior Stucco Uniwall exterior wall and insulation stucco system	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2395:0001, TEST PROTOCOL
Swanson Group Mfg. LLC (8140-2137:0500)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2137:0500, TEST PROTOCOL
Swanson Group Mfg. LLC (8140-2137:0501)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2137:0501, TEST PROTOCOL
Swanson Group Mfg. LLC (8140-2137:0502)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2137:0502, TEST PROTOCOL
Thermally Modified Ash Americana and Red Oak Siding	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2308:0501, TEST PROTOCOL
Thermally Modified Ash Siding Panels, tongue and groove siding sized nominally 0	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2392:0002, TEST PROTOCOL
Thermory USA LLC (8140-2135:0500)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2135:0500, TEST PROTOCOL
Timber Products Company (8140-2343:0500)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2343:0500, TEST PROTOCOL
Timber Products Company (8140-2343:0501)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2343:0501, TEST PROTOCOL
Timber Products Company (8140-2343:0502)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2343:0502, TEST PROTOCOL
Timber Products Company (8140-2343:0503)	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2343:0503, TEST PROTOCOL
TMQ451P Oracle Quad 4	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2339:0502, TEST PROTOCOL
TT-205 T&G Cedar Siding - Nominal 1x6 and wider	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2294:0500, TEST PROTOCOL
XTR-SID18-137TG-PP, 3/4" x 5-3/8", Fused Bamboo® RainClad® Shiplap Siding	siding	Listed	1 cited field Test standard: sfm 12 7a 1 · Listing 8140-2216:0503, TEST PROTOCOL

Sources

2025 California Wildland-Urban Interface Code construction notes, Section 504.5 — Town of Truckee public record (official). Accessed 2026-08-27.

2025 California WUI Code SFM 12-7A-1 exterior-wall path. FireApproved. https://fireapproved.com/requirements/cwuic-2025-sfm-12-7a-1-exterior-wall/. Last verified 2026-08-27.