Panel · 90–165 mm
Panelised — indicative fig. C·29
Fire Group 1 Group 1Embodied carbon Data pending Per-m² sourceCompressive 0.15-0.20MPa StructuralDesign life 50yr
SIPs with fibre?cement faces use EPS cores and durable face sheets (density ?1.6 kg/dm?, flexural strength ~32 MPa, water absorption ~9% for fibre?cement panels).
01 Physical
Density Fibre?cement face density ?1.6 kg/dm? (?1600 kg/m?)kg/m³
Specific gravity 0.28-0.45
Porosity 2-5%
Water absorption ?9% (fibre?cement panel data)%
Hardness 40-50
UV resistance Excellent
Chemical resistance Good
pH tolerance 6-11
Surface roughness 5-15µm
02 Mechanical
Tensile strength 0.08-0.12MPa
Compressive strength 0.15-0.20MPa
Flexural strength ?4,640 psi (~32 MPa) for fibre?cement panelsMPa
Shear strength 0.10-0.15MPa
Poisson's ratio 0.1-0.2
Impact resistance Good
Creep resistance 1-2% at 20% load
03 Thermal
Thermal conductivity 0.033-0.040W/m·K
Specific heat 1300-1500J/kg·K
Thermal expansion 5-7 x 10⁻⁵×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Group 1
Fire resistance level FRL 30/30/-
Ignition temp 360°C
Flame spread index <25
Smoke dev. index <450
Heat release rate 100-150
05 Sustainability & Health
Embodied carbon 8-12
Carbon footprint 15-25
Embodied energy 150-200MJ/kg
Water footprint 50-80L/kg
Recyclability 75-85%
Recycled content 0-15%
Renewable content 5-10%
Circular score 6/10
VOC emissions <0.1
Toxicity rating Non-toxic
LEED contribution 3-5
06 Durability · Cost · Logistics
Expected lifespan 50+
Maintenance interval 5-10
Warranty period 10-15
Material cost (range) $130-170
Material cost (per unit) $380-650
Lead time 2-6 weeks
Lifecycle cost $180-250
Annual maintenance $2-5
Market availability Moderate
07 Assessment
Advantages
- 50-60% faster construction than traditional methods
- 40-60% energy savings on heating/cooling
- Superior thermal performance (R2.0-4.5)
- Fire rated FRL 30/30/- standard
- BAL-40 bushfire compliance available
- Termite and moisture resistant
- Reduced on-site labour requirements
- Minimal construction waste
- Excellent dimensional stability
- Integrated structure and insulation
Constraints
- Higher upfront cost ($130-170/m² vs $60-80/m² traditional)
- Requires experienced installers
- Limited modification flexibility post-installation
- Electrical/plumbing routing requires pre-planning
- Specialised fixing systems needed
- Transport limitations for remote sites
- Engineering certification required
- Not suitable for BAL-FZ without additional protection
- Potential for EPS degradation above 75°C
- Limited Australian manufacturing capacity
08 Applications
A1 Residential wall systems
A2 Commercial building envelopes
A3 Modular and prefabricated construction
A4 Bushfire-resistant construction (up to BAL-40)
A5 Cyclone-rated buildings (Region D)
A6 Educational facilities
A7 Cold storage facilities
A8 Acoustic barrier walls
A9 Roof and floor systems
A10 Rapid deployment structures
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.