Panel · 3–25 mm
Laminate — indicative fig. C·23
Fire A1 Non-combustibleEmbodied carbon 21kgCO₂e/kg HighCompressive ?1.37 MPa (stone honeycomb panel test data, 5 mm stone)MPa StructuralDesign life 20yr
Stone honeycomb/laminated panels using 3?8 mm stone on lightweight backing, total thickness 12?25 mm and typical weight 14?20 kg/m? (manufacturer data); substantial weight reduction vs solid stone cladding.
01 Physical
Density 14?20 kg/m? (panel weight, stone honeycomb systems)kg/m³
Specific gravity 2.5-2.8 (stone component); 0.3-0.5 (honeycomb backing)
Porosity 0.5-5% depending on stone type (granite: <1%, limestone: 5-15%)%
Water absorption Stone dependent; not specified for composite panel%
Hardness 3-7 Mohs scale (marble: 3-4, granite: 6-7)
UV resistance Excellent (natural stone); slight color change possible over decades
Chemical resistance Good to excellent; vulnerable to acids (limestone/marble)
pH tolerance pH 5-11 (granite/quartzite); pH 7-9 (limestone/marble)
Surface roughness 0.5-5.0 μm Ra depending on finish (polished to textured)µm
02 Mechanical
Tensile strength 5-15 MPa (natural stone component)MPa
Compressive strength ?1.37 MPa (stone honeycomb panel test data, 5 mm stone)MPa
Flexural strength ?17.8 MPa (stone honeycomb panel test data, 5 mm stone)MPa
Shear strength 10-20 MPa (stone component); 1.7 MPa minimum bondMPa
Poisson's ratio 0.20-0.35 (typical natural stone)
Impact resistance Class 1 BS 8200:1985 (500J solid body impact)
03 Thermal
Thermal conductivity 1.26-3.98 W/m·K (limestone: 1.26-1.71, granite: 1.73-3.98)W/m·K
Specific heat 790-920 J/kg·K (typical natural stone)J/kg·K
Thermal expansion 4-10 × 10⁻⁶/°C (marble: 4-6, granite: 8-10)×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Non-combustible (stone); composite varies
Fire resistance level -/60/60 to 90/90/90 (backing dependent)
Ignition temp Not applicable (non-combustible stone)°C
Flame spread index 0-2 (AS/NZS 1530.3)
Smoke dev. index 0-5 (AS/NZS 1530.3)
Heat release rate <100 kW/m² (stone with combustible backing)
05 Sustainability & Health
Embodied carbon 21.4 kg CO2e/m² (vs 62.3 for precast concrete)
Carbon footprint 21.4-22.0 kg CO2e/m² (natural stone veneer)
Embodied energy 0.3-1.0 MJ/kg (minimal processing required)MJ/kg
Water footprint Low - primarily cutting and cooling water, recyclableL/kg
Recyclability 100% (stone component); 70-90% (complete system)%
Recycled content 0-30% (backing substrate dependent)%
Renewable content 0% (geological resource)%
Circular score High - reusable, recyclable, long service life
VOC emissions Zero (natural stone); minimal from adhesives
Toxicity rating Non-toxic (crystalline silica hazard during cutting only)
LEED contribution MR Credits 2-5, EQ Credit 4.1-4.2
06 Durability · Cost · Logistics
Expected lifespan 20-50+ years (climate and stone dependent)
Maintenance interval Inspect: 6-24 months; Reseal: 3-5 years
Warranty period 10-15 years (manufacturer); 5-10 years (installation)
Material cost (range) $49-170/m² (supply only)
Material cost (per unit) $89-109/m² (mid-range products)
Lead time 2-4 weeks (stock); 8-16 weeks (imported)
Lifecycle cost $325-420/m² (25-year analysis)
Annual maintenance $1.50-3.50/m²/year
Market availability Good - multiple Australian suppliers
07 Assessment
Advantages
- 80% weight reduction compared to traditional stone (63-78 kg/m² vs 300+ kg/m²)
- Enhanced impact resistance (60x greater than solid granite for StoneLite® system)
- Installation speed 10-12x faster than dimensional stone
- Reduced structural requirements and foundation loads
- Excellent fire performance (Group 1-2 classification, FRL up to 90/90/90)
- 100% recyclable natural stone component
- Zero VOC emissions contributing to indoor air quality
- Low embodied carbon (21.4-22.0 kg CO2e/m²)
- Suitable for all 8 BCA climate zones with appropriate design
- Cost-effective at $220-350/m² installed vs $450-600/m² for traditional stone
- 50+ year service life for granite in temperate climates
- Design flexibility with various fixing methods
Constraints
- Requires Performance Solution pathway for NCC compliance
- Limited Australian-specific technical data available
- Higher initial cost than some alternative cladding systems
- Specialist installation required (Certificate III in Stonemasonry)
- Movement joint requirements critical (3-6m spacing)
- Backing substrate selection affects fire performance
- Variable performance by stone type (limestone vs granite)
- Crystalline silica safety requirements during cutting
- Limited availability of some international systems
- Thermal movement considerations in extreme climates
- Sealant maintenance required every 3-5 years
- Edge protection critical in cyclonic regions
08 Applications
A1 External wall cladding for residential and commercial buildings
A2 Interior feature walls and accent surfaces
A3 High-rise facade systems with reduced structural loading
A4 Renovation and retrofit of existing buildings
A5 Soffit and ceiling applications
A6 Column wraps and architectural features
A7 Retail and hospitality fit-outs
A8 Institutional buildings (schools, hospitals, government)
A9 Marine environment applications with appropriate substrate
A10 Heritage building restoration with weight limitations
A11 Prefabricated panel construction
A12 Modular building systems
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.