Block · Sizes pending
Stone — indicative fig. M·117
Fire A1 to AS 3959 Non-combustibleEmbodied carbon Data pending Per-m² sourceCompressive 150MPa StructuralDesign life 100yr Durable
Traditional Welsh slate roofing material offering exceptional durability, low water absorption, and distinctive appearance for Australian heritage and contemporary applications.
01 Physical
Density 2700kg/m³
Specific gravity 2.7
Porosity 0.5%
Water absorption 0.35%
Hardness 3.5
UV resistance Excellent - Natural stone, no UV degradation
Chemical resistance Excellent - Resistant to acid rain, salt spray
02 Mechanical
Tensile strength 12MPa
Compressive strength 150MPa
Flexural strength 50MPa
Impact resistance Good - varies with thickness
03 Thermal
Thermal conductivity 1.49W/(m·K)
Specific heat 810J/(kg·K)
Thermal expansion 0.0000075/°C
04 Compliance & Fire First question
Combustibility class Non-combustible to AS 3959
Fire resistance level Non-combustible
Ignition temp N/A - Non-combustible°C
Flame spread index 0
Smoke dev. index 0
05 Sustainability & Health
Embodied carbon 157kgCO2e/m²
Carbon footprint 0.058kgCO2e/kg
Embodied energy 1MJ/kg
Recyclability 100%
Renewable content 0%
Circular score 85
VOC emissions 0g/L
Toxicity rating Non-toxic
06 Durability · Cost · Logistics
Expected lifespan 100years
Maintenance interval 5years
Warranty period 30years
Material cost (range) 130 – 150$/m²
Material cost (per unit) 140$/m²
Lead time 6weeks
Lifecycle cost 3.5$/m²/year
Annual maintenance 0.5$/m²/year
Market availability Readily available - Import required
07 Assessment
Advantages
- Exceptional durability (100+ years)
- Very low water absorption
- Distinctive aesthetic
- Minimal maintenance
- Fire resistant
- Weather resistant
- Traditional craftsmanship
Constraints
- High cost due to import
- Skilled installation required
- Heavy weight
- Limited supply
- Long lead times
- Specialist tools needed
08 Applications
A1 Heritage building restoration
A2 Premium residential roofing
A3 Churches and cathedrals
A4 Government buildings
A5 Luxury homes
A6 Traditional architecture
A7 Conservation projects
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.