Sheet · 6–24 mm
Cementitious — indicative fig. M·26
Fire A1 Non-combustibleEmbodied carbon 0.65kgCO₂e/kg Low–mediumCompressive 30-40 MPaMPa StructuralDesign life 50yr
High-density compressed fibre cement sheets providing non-combustible, moisture-resistant substrate for flooring, cladding, and wet area applications in Australian construction
01 Physical
Density 1620 kg/m³kg/m³
Specific gravity 1.62
Porosity 15-20%%
Water absorption <15% by mass%
Hardness 4-5 Mohs
UV resistance Excellent
Chemical resistance Good (pH 6-10)
pH tolerance 6-10
Surface roughness Ra 1-3 μmµm
02 Mechanical
Tensile strength 4-6 MPaMPa
Compressive strength 30-40 MPaMPa
Flexural strength 8-12 MPaMPa
Shear strength 2-3 MPaMPa
Poisson's ratio 0.20-0.25
Impact resistance Pass soft body impact test
Creep resistance Low creep under sustained load
03 Thermal
Thermal conductivity 0.216 W/mKW/m·K
Specific heat 0.75 kJ/kg·KJ/kg·K
Thermal expansion 8-10 × 10⁻⁶/°C×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Non-combustible (AS 1530.1)
Fire resistance level 60-120 minutes
Ignition temp N/A - Non-combustible°C
Flame spread index 0
Smoke dev. index 0-3
Heat release rate 0 kW/m²
05 Sustainability & Health
Embodied carbon 0.65-0.97 kg CO2e/kg
Carbon footprint 400-600 kg CO2e/m³
Embodied energy 4-6 MJ/kgMJ/kg
Water footprint 150-200 L/m²L/kg
Recyclability 100% (as aggregate)%
Recycled content 0-5%%
Renewable content 8-12% (cellulose fibres)%
VOC emissions <0.5 mg/m²·h
Toxicity rating Non-toxic (no asbestos)
LEED contribution MR, EQ credits possible
06 Durability · Cost · Logistics
Expected lifespan 50+ years
Maintenance interval Annual inspection, 5-7 year recoating
Warranty period 10 years
Material cost (range) $30-80/m²
Material cost (per unit) $35-45/m² (15mm), $45-55/m² (18mm)
Lead time 1-7 days ex-stock
Lifecycle cost $150-200/m² over 50 years
Annual maintenance $0.50-2/m²
Market availability Readily available
07 Assessment
Advantages
- Non-combustible - suitable for bushfire zones
- Moisture and rot resistant
- Termite resistant
- High density and strength
- Smooth finish ready for coating
- Dimensionally stable
- Long service life (50+ years)
- Australian manufactured
- Recyclable at end of life
Constraints
- Heavy weight requires handling equipment
- Brittle - requires careful handling
- Dust hazard during cutting (silica)
- Higher cost than particle board
- Requires sealing of cut edges
- Professional installation recommended
- Limited flexibility
- Thermal bridging potential
08 Applications
A1 Structural flooring substrate for tiles
A2 External wall cladding
A3 Wet area flooring and walls
A4 Bushfire-rated construction (BAL-12.5 to BAL-FZ)
A5 Tiled balconies and decks
A6 Formwork for concrete structures
A7 Sound barrier walls
A8 Eaves and soffits
A9 Commercial and industrial flooring
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.