IndiNature® Natural Fibre Insulation
Made from UK-grown crops. Designed for modern building performance.
IndiNature® insulation is leading a natural revolution in the built environment. Manufactured from UK-grown hemp and other plant fibres, these high-performance materials deliver a powerful combination of sustainability, durability, and occupant comfort.
From flexible thermal batts to acoustic rolls, the IndiTherm®, IndiBreathe®, and IndiSilence® ranges are helping specifiers, builders and installers meet today’s insulation standards—without compromising on carbon, health, or indoor comfort.
Every product is designed to regulate temperature and moisture passively, while locking away carbon long-term. Soft to handle, easy to install, and built for a better building future.
Discover the next generation of natural insulation with IndiNature® – carbon-storing, comfort-boosting, and installer-friendly performance, all at unbeatable trade value!
IndiTherm® – Natural Thermal Insulation with Maximum Carbon Capture
Flexible, friction-fit thermal batts made from UK-grown crops.
IndiTherm® is a natural insulation batt that leads the market with the lowest embodied carbon available today. Made using UK-grown crops, it’s soft to handle, extremely durable, and designed to friction-fit between structural framing or against masonry with minimal slumping.
It provides powerful thermal insulation and sound reduction, with the added benefit of thermal mass for stable indoor temperatures year-round. Ideal for walls, floors, and roofs.
✔ Carbon negative
✔ Soft to install
✔ Friction-fit rigidity
✔ Better than 40dB acoustic reduction (at 50mm)
Also available: IndiTherm® i-joist backer blocks – cut to size
Technical Specs:
Thermal Conductivity (λ): 0.039 W/m·K
Density: 45kg/m³
Specific Heat Capacity: 2371 J/(kg·K)
Vapour Diffusion Resistance (μ): 1.3
Acoustic Performance: ≥ 40dB (at 50mm)
Net Embodied Carbon: –0.79 kgCO₂e/kg (A1–A3, LCA)
IndiBreathe® Flex – For Breathable, Energy-Efficient Envelopes
Flexible insulation batts for natural, vapour-permeable construction.
IndiBreathe Flex® is a breathable insulation batt made from a specialised blend of natural fibres, offering excellent rigidity and softness for easy installation. It’s designed to create a healthy, high-performance thermal envelope—reducing energy use and buffering moisture naturally.
Ideal for structural framing and masonry, it supports comfortable, stable indoor temperatures while locking in carbon.
✔ Breathable construction
✔ Net carbon negative
✔ Healthy, natural materials
✔ Euroclass E fire rating
✔ Over 40dB acoustic reduction (at 50mm)
Technical Specs:
Thermal Conductivity (λ):
– 0.039 W/m·K (20–100mm)
– 0.042 W/m·K (120–140mm)
Density: 34kg/m³
Specific Heat Capacity: 1857 J/(kg·K)
Vapour Diffusion Resistance (μ): 1.3
Fire Rating: Euroclass E, s1, d0
Acoustic Performance: ≥ 41dB (at 50mm)
Net Embodied Carbon: –0.51 kgCO₂e/kg (A1–A3, LCA)
IndiSilence® – Natural Acoustic Insulation with Outstanding Performance
Rolls and slabs for quiet, comfortable indoor spaces.
IndiSilence® is designed for superior soundproofing in internal walls and floors. Whether you’re using the flexible Acoustic Insulation Rolls (AIR) or the denser Acoustic Insulation Slabs (AIS), both formats are made from a natural fibre blend and offer excellent rigidity, breathability, and acoustic absorption.
Quiet Mark Certified and exceeding 40dB reduction, IndiSilence® delivers peace of mind for installers and occupants alike—naturally.
✔ Outstanding noise reduction
✔ Soft, slumping-resistant material
✔ Quiet Mark Certified
✔ Tested to UKAS standards
✔ Exceeds Part E compliance
Technical Specs – Acoustic Insulation Rolls (AIR):
Thermal Conductivity (λ): 0.039 W/m·K
Density: 25kg/m³
Specific Heat Capacity: 2100 J/(kg·K)
Vapour Diffusion Resistance (μ): 1.3
Sound Reduction: 40–42dB
Fire Rating: Euroclass E
Technical Specs – Acoustic Insulation Slabs (AIS):
Thermal Conductivity (λ): 0.039 W/m·K
Density: 30kg/m³
Specific Heat Capacity: 2100 J/(kg·K)
Vapour Diffusion Resistance (μ): 1.3
Sound Reduction: 42–51dB
Fire Rating: Euroclass E
IndiSilence® – Natural Acoustic Insulation with Outstanding Performance
Whether you’re working on new-builds, retrofits or low-carbon projects, IndiNature® offers a reliable, installer-friendly range of insulation materials that deliver exceptional performance with a lighter environmental footprint. Made from renewable UK crops, each product is carbon negative, vapour-permeable, and safe to handle. With strong thermal, acoustic, and moisture-buffering properties, this is the ideal choice for builders and specifiers who want to meet modern standards while supporting natural, circular construction.
Accredited Distributor & How to Get in Touch
SWIS Distribution is a proud stockist of IndiNature® natural fibre insulation, supporting trade and commercial projects across the UK with dependable supply and expert guidance. From low-carbon new builds to eco-conscious retrofits, we help you specify and install with confidence — using high-performance materials made from UK-grown crops and built for modern standards.