Crafted from British-grown hemp, these 100mm Thermafleece NatraHemp Insulation Slabs measuring 100mm x 370mm deliver a sustainable, high-performing plant fibre insulation option for UK construction projects. Hemp is a rapidly renewable crop with minimal environmental footprint, producing premium fibres ideal for thermal applications. The 100mm x 370mm NatraHemp slabs combine a rich blend of British hemp with thermal bonding technology to ensure long-term durability and prevent material settlement.
These 100mm Thermafleece NatraHemp insulation slabs slot perfectly into rafter bays, joist cavities, and stud frameworks, delivering excellent thermal performance across multiple building scenarios. At 28 kg/m³ density, NatraHemp simultaneously provides strong acoustic properties, suppressing noise transmission across walls, roofs, and floor assemblies. Incorporating NatraHemp into your build significantly improves thermal efficiency and reduces ongoing heating expenditure.
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As a plant-derived natural fibre insulation, NatraHemp provides a vegan-friendly alternative suited to environmentally conscious builds. Production takes place in Britain using domestically farmed hemp, strengthening regional supply chains and minimising ecological impact.
NatraHemp functions as a vapour-open and breathable material, enabling it to manage moisture fluctuations during humid conditions and foster improved indoor air quality within building structures.
Thermafleece NatraHemp presents a non-hazardous, user-friendly installation experience. The material causes no skin irritation, eye discomfort, or respiratory issues and installs without requiring gloves or protective gear. For work in sealed or poorly ventilated spaces such as attic areas, wearing suitable PPE including a respiratory mask is advisable.
Pair NatraHemp with a vapour-permeable membrane to preserve the material's breathability characteristics.
Browse our full ThermaFleece Insulation range. We deliver across the UK Mainland. For product suitability advice on your specific project or to request a bulk discount quotation, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Competitive UK Insulation Pricing.








