composite / Timber-Based Composite / Cement-Bonded Board
Cement-Bonded Wood Fibre Panel (10mm, 12mm, 18mm, 25mm, 40mm)
Dense cement-bonded wood fibre panels offering high fire resistance, dimensional stability, and good acoustic performance.
Atlas code
COM-TBC-CBB-001
At-a-glance signals
Dense cement-bonded wood fibre panels offering high fire resistance, dimensional stability, and good acoustic performance.
Overview
Executive summary
Cement-bonded wood fibre panels are mineralized wood particles bound with cement, producing dense, durable boards with high fire resistance and good moisture tolerance.
Best when…
- Non-combustible Group 1 fire rating
- BAL-29 bushfire compliance
- Excellent moisture resistance
- Termite and fungal resistance
- High impact resistance
- Good acoustic properties (31-37 dB)
- Dimensional stability
- 100% recyclable
- No formaldehyde emissions
- Can be worked with standard woodworking tools
Top advantages
- 01 Non-combustible Group 1 fire rating
- 02 BAL-29 bushfire compliance
- 03 Excellent moisture resistance
- 04 Termite and fungal resistance
- 05 High impact resistance
Top limitations
- 01 Limited Australian availability
- 02 Higher cost than standard fibre cement ($65-120/m²)
- 03 Requires tungsten carbide cutting tools
- 04 Crystalline silica dust hazard
- 05 Heavy weight (1250-1350 kg/m³)
Technical
Physical ·9
- Density
- 1350 kg/m3 BetonWood technical characteristics.
- Specific gravity
- 1.25-1.35
- Porosity
- 28-32% %
- Water absorption
- 1.5 % Thickness swelling after 24h water immersion.
- Hardness
- Shore D 75-85
- UV resistance
- Good (requires surface sealing)
- Chemical resistance
- Alkaline resistant
- pH tolerance
- pH 9-12
- Surface roughness
- Ra 50-100 μm (unsanded) µm
Mechanical ·6
- Tensile strength
- 0.4-0.5 MPa MPa
- Compressive strength
- 9 MPa Resistance to distributed load 9000 kPa.
- Flexural strength
- 9 MPa Minimum flexural strength.
- Shear strength
- 1.2-1.5 MPa MPa
- Poisson's ratio
- 0.15-0.20
- Impact resistance
- High (specific values not available)
Sustainability & Health
Embodied carbon & energy ·5
- Embodied carbon
- 6-8 kg CO₂e/m² @ 12mm // Calculated estimate
- Carbon footprint
- 450-550 kg CO₂e/m³ // Estimated from cement content
- Embodied energy
- 4.5-5.5 MJ/kg MJ/kg // Typical for cement composites
- Recycled content
- Wood: 100% plantation timber %
- Renewable content
- 20-30% (wood content) %
Compliance & Fire
Fire performance ·5
- Combustibility class
- A2-fl-s1 Reaction to fire class per EN 13501-1.
- Fire resistance level
- Group 1 (AS 5637.1)
- Ignition temp
- >400°C °C
- Flame spread index
- 0 (AS 1530.3)
- Smoke dev. index
- 0-3 (AS 1530.3)
Cost & Lifecycle
Capex & lead time ·6
- Material cost (range)
- $65-120 per m²
- Material cost (per unit)
- $243-450 per sheet (3000x1250mm)
- Lead time
- 2-4 weeks standard, 4-8 weeks custom
- Lifecycle cost
- $150-200 per m² over 50 years
- Annual maintenance
- $2-5 per m² (sealing every 5-7 years)
- Market availability
- Limited - import only
Service life & durability ·3
- Expected lifespan
- 50+ years
- Maintenance interval
- Annual inspection, 5-7 year resealing
- Warranty period
- 10-15 years manufacturer
Layer D
Where it's used
External cladding in bushfire zones (BAL-29)
Acoustic wall partitions
Wet area substrates
Industrial flooring
Ceiling systems
Facade panels
Structural sheathing
Modular construction
Impact-resistant partitions