Thermafleece NatraHemp Insulation Slabs 50mm x 570mm

Thermafleece NatraHemp - British Hemp Plant Fibre Insulation

Made with British-grown hemp, 50mm Thermafleece NatraHemp Insulation Slabs 50mm x 570mm is a safe, efficient, and durable plant fibre insulation solution ideal for sustainable UK building projects. Hemp is a fast-growing, low-impact crop that produces fine fibres perfectly suited to insulation. 50mm x 570mm NatraHemp is manufactured from a fibre blend rich in British hemp and thermally bonded to enhance durability and prevent slumping over time.

Designed to fit securely between rafters, joists, and studs, 50mm Thermafleece NatraHemp delivers excellent thermal insulation performance across a wide range of applications. With a density of 28 kg/m³, it also offers effective acoustic insulation, helping to reduce sound transmission in walls, floors, and roofs. Insulating with NatraHemp is an effective way to improve energy efficiency and reduce heating costs.

Looking for the NatraHemp 50mm x 370mm Version ? Visit NatraHemp 50mm x 370mm

Key Benefits

1. Model: 50mm NatraHemp
2. Thickness (mm): 50mm
3. Length: 1200mm
4. Width: 570mm
5. Pack Coverage: 21.89m²
6. Pack quantity: 32 slabs
7. Thermal Conductivity: 0.042 W/m K
8. Highly breathable: Yes
9. Vapour open: Yes
10. Sound Absorption: NRC 0.90 @100 mm
11. Made from British Hemp: Yes
12. Made in the UK: Yes
13. Contains recycled materials: 37.5%
14. Recyclable: Yes
15. Manufactured to ISO 9001 and 14001: Yes
16. Fire Protection: Self Extinguishing
17. Material: Hemp
18. Range: NatraHemp

As a plant-based, natural fibre insulation, NatraHemp is an animal-free option suitable for eco-conscious projects. It is manufactured in Britain using hemp farmed in the UK, supporting local supply chains and reducing environmental impact.

NatraHemp is vapour open and breathable, allowing it to buffer moisture during periods of high humidity and support healthier building envelopes.

Installation & Handling

Thermafleece NatraHemp is non-hazardous and comfortable to work with. It does not irritate the skin, eyes, or respiratory system and can be installed without gloves or protective clothing. When fitting insulation in enclosed or non-ventilated areas such as lofts, the use of appropriate PPE, including a dust mask, is recommended.

To maintain breathability, NatraHemp can be used alongside a vapour-permeable underlay.

Application Instructions / How-To Use

• Measure the cavity width before installation
• Cut the batts using a Stanley knife, insulation saw, or by hand tearing for quick fitting
• For precise cuts, compress the batt between 15 mm boards and saw along the overhanging edge
• Press the insulation firmly between rafters, joists or studs to ensure a secure fit
• Use scissors or shears to trim loose fibres
• Install in layers if multiple thicknesses are required to meet specific U-values
• Ensure full coverage without gaps for optimal thermal and acoustic performance

Storage Guidance

Store insulation under cover and off the ground. Once unpacked, protect it from prolonged exposure to sunlight, rain, or other sources of moisture to maintain performance.

Info

Have a browse of our ThermaFleece Insulation products. We supply to the entire UK Mainland. If you’d like to talk through the suitability of some products for your project, or get a quantity discount quotation please call us by phone on 02039519012 / 02038839057, email sales@insulationstoreonline.co.uk or Live Chat - Lowest UK Insulation Prices near me.