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Thermafleece SupaSoft

Thermafleece SupaSoft

Regular price £44.18
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SupaSoft insulation offers a safe, sustainable and cost-effective way to insulate your loft. The insulation contains 100% recycled polyester and is made almost entirely from recycled plastic bottles. This turns duvet and pillow technology into safe, sustainable and cost effective insulation for your loft.

Most of us are familiar with the warmth and comfort provided by polyester fibres, widely used to fill jackets, duvets and pillows. Now using this technology and recycled polyester fibres made from recycled plastic bottles they have created long lasting and safe insulation for lofts.

SupaSoft contains no harmful chemicals or binders and is completely safe to handle. Converting plastic bottles into insulation helps divert many tonnes of waste plastic from landfill or incineration helping protect our environment.

SupaSoft is long-lasting and easy to install. What’s more, energy savings mean the insulation pays for itself in just a few years. SupaSoft can be used to insulate between and over joists or simply laid on top of existing insulation to improve overall insulation performance.


  • Ideal for loft insulation
  • Floors on all levels
  • Can be used in walls and between rafters

Why Insulate with Thermafleece SupaSoft?

Insulating a property will significantly reduce the amount of energy lost from the building envelope, reducing energy consumption and carbon dioxide released to the atmosphere.

Affordable: Insulating with SupaSoft insulation is a very cost-effective alternative to glass or other mineral insulation. What’s more, the energy it saves means SupaSoft insulation quickly pays for itself.

Long Lasting: Thermafleece SupaSoft contains a lofting agent to maintain durability, fibre stability and structural integrity creating a long-lasting insulation.

Quality Assured: Thermafleece SupaSoft is manufactured and supplied in accordance with ISO 9001 qms.

Sustainable: Thermafleece SupaSoft can reduce CO2 emissions by many tonnes over the lifetime of use. What’s more, SupaSoft insulation is made from recycled plastic bottles and has a recycled content of more than 95%.

Vapour Open: SupaSoft insulation is an open non-woven material that allows water vapour to pass through the insulation.

Safe: Thermafleece SupaSoft is safe to handle and can be recycled or safely disposed of at the end of its life.


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

You can also cut SupaSoft by tightly compressing or clamping 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.

Key Facts and Specification

  • Thermal Conductivity: 0.040 Wm-1K-1
  • Water Absorption (@100% RH): 0% w/w
  • Specific Heat Capacity: 1000 Jkg-1K-1
  • Vapour Resistivity: 5 MN·s·g–1m–1
  • Flammability to BS 5803-4: Pass
  • Smoulder resistance to BS 5803-4: Pass
  • Fire Classification: EuroClass E
  • EN11925-2 Reaction to Fire: Pass
  • Smoulder resistance to BS 5803-4: Pass
  • GWP (A1-A3) total: 0.99 kgCO2e for R1
  • Recoverability and thickness, EN 823: Pass
  • Dimensional stability to EN 1604: Pass
  • Can be used to achieve airborne sound reduction of Rw = 40dB.
  • Manufactured to ISO 9001 & 14001

R Values

 Thickness (mm) Thermal Resistance (Km2W)
50 1.25
100 2.50
150 3.75
250 6.25
300 7.50


If you would like instructions on how to insulate a loft with SupaSoft, then please download the guide below:

Download SupaSoft Loft Insulation Guide 


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