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Description

Versatile insulation slabs rich in British hemp fibres

Hemp is a fast-growing, low-impact plant crop that produces fine fibres suitable for insulation.  Thermafleece NatraHemp is a medium density insulation rich in home-grown hemp fibres and is a safe, efficient and durable alternative when plant fibre is the preferred choice.

Thermafleece NatraHemp fits securely between rafters, joists and studs providing excellent thermal insulation performance. What’s more, with a density of 25 kg/m3, Thermafleece NatraHemp can provide good acoustic insulation in a variety of systems.

Thermafleece NatraHemp is harmless and can be installed without gloves or protective clothing, although we recommend you wear a dust mask in enclosed spaces such as lofts. Thermafleece NatraHemp is not irritating to the skin, eyes or respiratory tract.

To retain the benefits of water vapour, absorption and release, Thermafleece NatraHemp may be used in conjunction with a vapour permeable underlay. Protect the insulation from prolonged exposure to sunlight when unpacked and avoid wetting for extended periods, store under cover and clear of the ground.

Thermafleece NatraHemp can be cut using a straight edge and a Stanley knife, or simply torn apart.

For more accurate cutting, tightly compress or clamp the insulation between two pieces of solid 15mm board. Overhang the fleece where you want to cut keeping the two board edges aligned. Saw cut the edge using a sharp, scalloped edged knife and keep the blade firm and square against both board edges throughout. Trim any fine remaining fibres with large scissors or shears.

Thermal Conductivity: 0.040 Wm-1K-1
Density: 26 kgm-3
Vapour Resistivity: 9 MN·s·g–1m–1
Water Absorption (@100% RH): 17% w/w
Specific Heat Capacity 1800 Jkg-1K-1
Spread of Fire to BS 5803-4: pass
EN 11654:1997: Class A @ 100mm
EN 11654:1997: Class A @ 70mm
Embodied Energy (Net of Non-Fossil Feedstock Energy): 10 MJkg-1
Recycled Content: 37.5%
Recyclable: Yes

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