United States / Build / “MOSO Bamboo Thermo Siding" boards are made of compressed thermally treated bamboo strips

“MOSO Bamboo Thermo Siding" boards are made of compressed thermally treated bamboo strips

This is a listed siding assembly. Listing 8140-2278:0504. This site cites SFM 12-7A-1. Match the model and orientation.

Kind: listed-assembly. Brand: MOSO North America, Inc.. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-23. JSON (CC BY 4.0)

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MOSO Bamboo Thermo Siding is listed for wildfire-area walls as horizontal boards over specified sheathing and framing.

The wall described in listing 8140-2278:0504 uses compressed, thermally treated bamboo strips formed into nominal 5-3/8-by-3/4-inch boards. The boards install horizontally over 5/8-inch DensGlass sheathing on 2-by-4-inch Douglas fir studs spaced 16 inches on center.

OSFM identifies SFM 12-7A-1 as the test protocol for this exterior-wall assembly. Match the bamboo boards to the named backing and framing when comparing proposals. Neither the Thermo name nor the siding's appearance supplies the concealed sheathing requirement.

The manufacturer's instructions and product data sheets are the next references for installation details, as specified by the handbook. Confirm the exact GOVmotus listing and the supplier's horizontal siding product before specification. That check should preserve the nominal board dimensions, DensGlass thickness and stud layout as one described wall construction.

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 — 8140-2278:0504 (official-listing · Listing 8140-2278:0504, 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 8140-2278:0504 · Search BML for 8140-2278:0504 2026-08-25 2027-06-30 listed

Tests and programs cited

Specification notes

Sources

“MOSO Bamboo Thermo Siding" boards are made of compressed thermally treated bamboo strips. FireApproved. https://fireapproved.com/materials/moso-north-america-inc-moso-bamboo-thermo-siding-boards-are-made-of/. Last verified 2026-08-23.