Block · 10–30 mm
Stone — indicative fig. M·119
Fire A1 Non-combustibleEmbodied carbon 0.06kgCO₂e/kg LowCompressive 45MPa StructuralDesign life 100yr Durable
Natural metamorphic stone cladding offering exceptional durability, low water absorption (<0.4%), and non-combustible fire rating. Available in 10mm, 20mm, and 30mm thicknesses for interior and exterior wall applications across all Australian climate zones.
01 Physical
Density 2750kg/m³
Specific gravity 2.75
Porosity 0.5%
Water absorption 0.3%
Hardness 3.5
UV resistance excellent
Chemical resistance excellent
pH tolerance 3-11
Surface roughness 0.5µm
02 Mechanical
Tensile strength 12MPa
Compressive strength 45MPa
Flexural strength 38MPa
Shear strength 15MPa
Poisson's ratio 0.25
Impact resistance moderate
Creep resistance excellent
03 Thermal
Thermal conductivity 1.6W/m·K
Specific heat 760J/kg·K
Thermal expansion 9×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class non-combustible
Fire resistance level non-combustible
Flame spread index 0
Smoke dev. index 0
Heat release rate 0
05 Sustainability & Health
Embodied carbon 0.06
Carbon footprint 12
Embodied energy 1MJ/kg
Water footprint 150L/kg
Recyclability 100%
Recycled content 0%
Renewable content 0%
Circular score 8
VOC emissions 0
Toxicity rating non-toxic
LEED contribution 2
06 Durability · Cost · Logistics
Expected lifespan 100
Maintenance interval 10
Warranty period 30
Material cost (range) 150-400
Material cost (per unit) 250
Lead time 4-12 weeks
Lifecycle cost 400
Annual maintenance 2
Market availability moderate
07 Assessment
Advantages
- Exceptional durability (100+ year lifespan)
- Non-combustible (AS 1530.1 compliant)
- Extremely low water absorption (<0.4%)
- Natural aesthetic with colour variation
- Resistant to UV, frost, and chemical degradation
- Suitable for all Australian climate zones
- BAL-FZ rated for bushfire zones
- 100% recyclable natural material
- Low maintenance requirements
- Excellent acoustic properties
Constraints
- High initial material cost ($150-400/m²)
- Requires specialist installation
- Limited Australian quarries
- Heavy weight requires structural consideration
- Natural variation in colour and texture
- Brittle - susceptible to impact damage
- Can delaminate if poor quality
- Requires careful detailing at penetrations
- Higher embodied energy if imported
08 Applications
A1 External wall cladding (rainscreen systems)
A2 Interior feature walls
A3 Facade systems for commercial buildings
A4 Heritage building restoration
A5 Bushfire-prone area cladding (BAL-FZ)
A6 Marine environment applications
A7 Ventilated cavity wall systems
A8 Architectural accent panels
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.