Form · 90–190 mm
Plant-Based Fibre — indicative fig. O·09
Fire Combustible CombustibleEmbodied carbon Data pending Per-m² sourceCompressive 10kPa StructuralDesign life 75yr Durable
Sustainable thermal and acoustic insulation made from 90% hemp fibres with 10% polymer binder, offering R-values of 1.5-4.0 (3.7/inch), negative carbon footprint, and excellent moisture regulation properties
01 Physical
Density 30 – 100kg/m³
Specific gravity 1.48
Porosity 85 – 95%
Water absorption 25 – 40%
UV resistance Moderate
Chemical resistance Good
pH tolerance 6 – 10pH
Surface roughness Highµm
02 Mechanical
Tensile strength 35MPa
Compressive strength 10kPa
Poisson's ratio 0.3
Impact resistance Low
Creep resistance Good
03 Thermal
Thermal conductivity 0.04 – 0.045W/mK
Specific heat 1600 – 2300J/(kg·K)
Thermal expansion 0.000051/K
04 Compliance & Fire First question
Combustibility class Combustible
Ignition temp 250°C
Flame spread index 25
Smoke dev. index 50
Heat release rate Low
05 Sustainability & Health
Embodied carbon -2.3 – -0.198kg CO₂eq/m²
Carbon footprint -2.3 – -0.198kg CO₂eq/m²
Embodied energy 30 – 35MJ/kg
Water footprint 2500L/kg
Recyclability 100%
Recycled content 0%
Renewable content 90%
Circular score 85%
VOC emissions 0μg/m³
Toxicity rating Non-toxic
LEED contribution 3-5 points
06 Durability · Cost · Logistics
Expected lifespan 50 – 100years
Maintenance interval 0years
Warranty period 10 – 25years
Material cost (range) 15 – 35$/m²
Material cost (per unit) 1.75$/sq ft
Lead time 4 – 12weeks
Lifecycle cost 35 – 70$/m²
Annual maintenance 0$/m²/year
Market availability Limited
07 Assessment
Advantages
- Carbon negative material (sequesters more CO₂ than emitted in production)
- No VOCs or toxic off-gassing
- Natural pest, mould, and mildew resistance
- Excellent moisture regulation without performance loss
- Superior acoustic absorption properties
- Non-irritant installation (no protective equipment required)
- Biodegradable and recyclable
- 10-hour thermal phase shift for temperature stability
- USDA certified biobased material (89.9% organic content)
Constraints
- Higher initial cost than conventional insulation ($1.40-3.10/sq ft)
- Limited Australian suppliers and availability
- Requires import for most products
- Limited Australian fire testing certification
- Installation contractor unfamiliarity
- Minimum order quantities (often full pallets)
- Variable density control in manufacturing
- Potential for settling if incorrectly installed
08 Applications
A1 Residential wall cavity insulation (timber and steel frame)
A2 Ceiling and roof insulation
A3 Underfloor insulation
A4 Acoustic treatment for recording studios and theatres
A5 Heritage building retrofits
A6 Passive house construction
A7 Modular and prefabricated buildings
A8 Van and RV conversions
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.