BOSB-S18. 18mm of engineered bamboo.
Our flagship structural panel. 100% Moso bamboo, three-layer cross-oriented strand construction, EN 300 OSB4 certified. The panel that proves bamboo can replace wood OSB without compromise.
A panel that out-performs wood OSB on the metric that matters.
The structural threshold, reached at 18mm.
Most wood OSB hits 50 MPa MOR at 30mm thickness. BAMOSB-S18 reaches it at 18mm — that's a 40% reduction in material for the same structural performance. The reason is bamboo's natural fiber density and our three-layer cross-orientation, which exploits that fiber alignment in both directions.
The practical result: lighter walls, longer spans, fewer studs. For modular builders, that means 8-12% more interior floor area in the same external envelope.
Three layers, cross-oriented, one structural panel.
The full spec sheet.
All values per EN 300. Third-party test reports available on request.
Every claim is documented.
The applications for BAMOSB-S18.
BAMOSB-S18 is the only bamboo panel I have specified that passes EN 300 OSB4 at 18mm. Our modular line is now 8% lighter per square meter, and the EPD sealed a public-procurement contract we would have lost on carbon.
What buyers ask before they specify.
Is BAMOSB-S18 a direct replacement for wood OSB?
For most structural applications — yes. Where you currently use EN 300 OSB3 or OSB4 wood panels in roof, wall, or floor assemblies, BAMOSB-S18 drops in at the same thickness with the same fastener schedule. The two differences that matter: BAMOSB-S18 has higher MOR at lower density, and it is dimensionally more stable (lower thickness swell).
What about cost? Is bamboo OSB more expensive?
Unit price per m² is comparable to premium imported wood OSB. The cost saving comes from weight (lower transport cost per panel) and from carbon-driven procurement preference in EU institutional projects, which often translates to 3-7% effective price advantage for the contractor.
What lead time can I expect?
14-21 days for stocked 18mm sheets to FOB Ningbo. 28-35 days for custom sizes. Repeat orders for stocked thicknesses can ship in 7 days with a confirmed PO.
Do you offer fire-rated variants?
Yes. BAMOSB-S18 FR is treated to EN 13501-1 B-s1, d0 (the highest panel-class rating). Available on 21-day lead time. Add 8-12% to the unit price.
What is the minimum order quantity?
One 40HC container (approximately 850 panels for 18mm thickness). Mixed-thickness orders accepted. Sample kit of three panels (300×300mm) is available for testing.
Specify BAMOSB-S18 for your next project.
Engineering data
Measured values are third-party laboratory tests on standard 18 mm samples (EN 310 / EN 317 / EN 300 OSB4 protocol, 10% equilibrium moisture). The “target” column tracks the development roadmap being independently re-tested Q4 2026; current lot data ships on every spec sheet.
| Bending strength (MOR), 18 mm main axis | 50+ MPa (18 mm measured, 3rd-party) · Target ≥ 70 MPa (target · Q4 2026 re-test) |
|---|---|
| Modulus of elasticity (MOE), 18 mm | 9 GPa |
| Thickness swelling, 24 h immersion | < 6.5% (EN 317) |
| Formaldehyde emission | 0 ppm UF · E0 (3rd-party verified) |
| Density | 800 kg/m³ |
| Standard size | 0 · Custom cuts available |
Source: BAMOSB Internal QC + Breverified 3rd-party lab (TÜV Rheinland / SGS / equivalent). Spec sheets download per-lot.