Hemp Fibre Batt Insulation, R1.5-R4.0 (90mm, 140mm, 190mm)
Hemp fibre batt insulation is a high-performance, sustainable insulation material comprising 90% natural hemp fibres and 10% polymer binder. Available in standard thicknesses of 90mm (R13), 140mm (R20), and 190mm (R28), it provides thermal conductivity of 0.040-0.045 W/mK comparable to conventional glasswool. The material offers exceptional moisture management through vapour permeability of 0.647 Perms, natural pest resistance from high silica content, and carbon sequestration resulting in negative embodied carbon of -0.198 to -2.30 kg CO₂eq/m². Suitable for walls, ceilings, and floors in all Australian climate zones.
- Residential wall cavity insulation (timber and steel frame)
- Ceiling and roof insulation
- Underfloor insulation
- Acoustic treatment for recording studios and theatres
- Heritage building retrofits
- Passive house construction
- Modular and prefabricated buildings
- Van and RV conversions
Hemp has been used for thousands of years in construction, with hemp-lime composites found in ancient structures. Modern hemp batt insulation emerged in the 1990s in Europe, particularly France and Germany, as sustainable building practices gained prominence. The technology was refined through the 2000s with improved binding agents and fire retardants. North American production began in the 2010s following hemp legalisation. Australian interest has grown since 2017 with industrial hemp cultivation expanding, though local batt production remains limited. Current developments focus on reducing synthetic binder content and achieving full biodegradability while maintaining fire performance standards.
DISCLAIMER: This specification document is generated from the CLAD Materials Atlas Database. Information is for general guidance only and does not constitute professional engineering advice. Values are typical and may vary by batch, manufacturer, and production run. Verify suitability for specific project applications independently.