Board · 3–25 mm
Timber-Based Composite — indicative fig. C·55
Fire Combustible CombustibleEmbodied carbon -3.18kgCO₂e/kg Stores carbonCompressive 18MPa StructuralDesign life 30yr
Cross-laminated veneer panels used for structural sheathing and formwork, with properties dependent on species and grade.
01 Physical
Density 400-600kg/m3
Specific gravity 0.4-0.6
Porosity 15%
Water absorption 12%
UV resistance low
Chemical resistance moderate
pH tolerance 5-9
Surface roughness smoothµm
02 Mechanical
Tensile strength 13MPa
Compressive strength 18MPa
Flexural strength 33.72-42.61MPa
Shear strength 2.2MPa
Poisson's ratio 0.3
Impact resistance high
Creep resistance good
03 Thermal
Thermal conductivity 0.1154W/m·K
Specific heat 2300J/kg·K
Thermal expansion 0.0000045×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class combustible
Ignition temp 300°C
Flame spread index 7
Smoke dev. index 4
05 Sustainability & Health
Embodied carbon -3.18
Carbon footprint -3.18
Embodied energy 150MJ/kg
Recyclability 100
Recycled content 0
Renewable content 100
Circular score 85
VOC emissions 0.5
Toxicity rating low
LEED contribution 3
06 Durability · Cost · Logistics
Expected lifespan 30
Maintenance interval 5
Warranty period 5
Material cost (range) 24-54
Material cost (per unit) 35
Lead time 1-3 days stock
Lifecycle cost 85
Annual maintenance 2
Market availability excellent
07 Assessment
Advantages
- High strength-to-weight ratio
- Excellent panel shear strength
- Cross-laminated stability
- Carbon negative (stores CO₂)
- 100% renewable resource
- FSC/PEFC certified options
- Wide thickness range available
- Suitable for all BAL zones with appropriate density
Constraints
- Requires edge sealing for exterior use
- Preservative treatment needed for durability
- Combustible material
- Limited acoustic performance alone
- Moisture sensitive without treatment
- Higher cost than non-structural panels
08 Applications
A1 Structural flooring systems
A2 Shear walls and bracing
A3 Roof sheathing
A4 Concrete formwork
A5 Marine construction
A6 Furniture and joinery
A7 Portal frame gussets
A8 Temporary 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.