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Thermafleece NatraHemp Insulation Slabs 50mm x 370mm - 21.31m2

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£213.17 Incl. VAT
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If you're looking for vegan-friendly insulation, Thermafleece NatraHemp is a perfect choice. NatraHemp is made using hemp fibres grown in Britain and is an effective, enduring and ecological alternative to traditional insulation. It's flexible also to the home, usable to insulate your rafters and fits in securely between joists and studs, all the while providing a robust thermal performance. It is also totally harmless during installation, negating the need for any protective equipment such as gloves or goggles. NatraHemp won't cause irritation, although we recommend using a dust mask when working in confined spaces such as lofts.

By using NatraHemp, you're making an ecologically beneficial choice for your home and the environment. By not using artificial materials, you can recycle the product at the end of its life. It is also highly breathable, which means the air quality in your home will improve. NatraHemp is also tightly packed, reducing the environmental impact and costs of transport by up to 50%.

Features & Benefits: Thermafleece NatraHemp Insulation Slabs 50mm x 370mm - 21.31m2

  • British made
  • Plant based
  • Long lasting
  • Use in rafters and joists
  • Easy to install
  • Non-irritating
  • Natural
  • Breathable
  • Recyclable
  • Long lasting
  • Water Absorption (@100% RH): 17% w/w Ignition Point: > 500°C
  • Density: 25 kgm-3

ThermaFleece NatraHemp can simply be torn apart to the sizes required or easily cut using a straight edge knife. To cut more accurately, compact the insulation between two solid 15mm boards. Hang the insulation over the edge where you want the cut making sure to keep the boards aligned, then cut using a sharp knife, holding the blade firm and true against the board edges. We recommend a scalloped edged blade for best results.


Roofs: Loft and warm roof|Walls: Timber frame and solid wall|Floors: Suspended ground floor and between floors


  • Roofs: loft & warm roof.
  • Walls: timber frame & solid wall.
  • Floors: suspended ground floor & between floor.

Standards & Certification

  • NatraHemp is manufactured to ISO 9001 and 14001

Please note:

  • Deliveries to the postcode prefix AB, IV, KW, PH, PA, HS, KA, ZE and to Northern Ireland and the Republic of Ireland may incur additional delivery charges.


Length 1200mm Thickness 50mm Width 370mm


Thermal Conductivity 0.040 W/mK Application Between Rafter
Stud Walls
Above Rafter
Features Moisture Resistant
Fire Protection Self Extinguishing
Material Hemp

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5 / 5 1 reviews
1st November 2019
Really easy to place the slabs between joists. Nice not to need a face mask while working.
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Thermafleece NatraHemp Insulation Slabs 50mm x 370mm - 21.31m2

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