Thermafleece EcoRoll

THERMAFLEECE EcoRoll is a wool based insulation that is compress packed and ideal for quick and easy installation. THERMAFLEECE EcoRoll contains 75% wool blended with 15% recycled polyester and 10% polyester binder.


Insulating roofs with THERMAFLEECE is one of the most effective ways to significantly reduce energy consumption within buildings.


THERMAFLEECE can be installed in many wall applications for a variety of thermal and acoustic applications.


Insulating roofs with THERMAFLEECE is one of the most effective ways to significantly reduce energy consumption within buildings.

THERMAFLEECE EcoRoll’s convenient compressed form reduces transport impacts by more than 50% compared to other natural insulations. Once unpacked, it regains its original thickness to provide excellent thermal and acoustic insulation.

Like all THERMAFLEECE wool products, it is long-lasting, safe to handle and can contribute to a healthier indoor environment by acting as a moisture buffer and absorbing indoor pollutants such as formaldehyde in the building fabric.

  • Sustainable
  • Contains British Wool
  • Made in the UK
  • Manufactured to ISO 9001 & 14001
  • Width (mm): 370, 570
  • Thickness (mm): 50*, 75, 100, 140
  • Thermal conductivity: 0.039 W/mK 

*Made to order

THERMAFLEECE EcoRoll 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 EcoRoll is not irritating to the skin, eyes or respiratory tract.

To retain the benefits of water vapour, absorption and release, THERMAFLEECE 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 EcoRoll 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 - 0.039 Wm-1K-1

Water Absorption (@100% RH) - 30% w/w

Specific Heat Capacity - 1800 Jkg-1K-1

Mould Resistance - CUAP Vegetable Fibre Draft 2002-01-25 - Pass

Moth/Beetle Proofing - ISO 3998 - Pass

Vapour Resistivity - 9 MN·s·g–1m–1

Ignition Point - >500oC

Spread of Fire to BS 5803-4 - Pass

Recoverability and thickness to EN 823 - Pass

Dimensional stability to EN 1604 - Pass

Short term water absorption to EN 1609 method A – Pass


Manufactured to ISO 9001 & 14001


EN ISO 11654:1997 - 100mm - Aa 1.00, Class A

EN ISO 11654:1997 -  50mm - Aa 0.75, Class B


GWP (Cradle to Gate) – minus 0.2 kgCO2e

Embodied Energy (Net of Non-Fossil Feedstock Energy) - 7 MJkg-1

Recycled Content - 20%

Recyclable - Yes   


Roof:150mm Thermafleece EcoRoll between rafters.

Walls:100mm Thermafleece EcoRoll between timber frame and behind wood fibreboards.

Installer:Totnes Sustainable Construction. Insulation supplied by Back to Earth Ltd.