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Sheeps Wool Loft Insulation CosyWool by Thermafleece 100mm x 370mm - 7.22m2

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£81.22 Incl. VAT
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Thermafleece CosyWool is a versatile insulation rich in sheep’s wool and is the ideal choice if you are looking for all round performance and value for money. Research shows that using 75% wool in combination with recycled fibres outperforms alternative products with a higher percentage of wool. Our wool rich blend ensures you get the full benefit of sheep’s wool with enhanced performance, durability and sustainability.

Thermafleece CosyWool’s convenient compressed form reduces transport impacts by more than 50% compared to other natural insulation and makes it ideal for quick and easy installation. Once unpacked, it regains its original thickness to provide excellent thermal and acoustic performance.

Deliveries to the postcodes AB, IV, KW, PH, PA, HS, KA, ZE and to ROI/NI may incur additional delivery charges.

7.22m2 coverage per pack.
3 items per pack.


Length: 6.5m.
Width: 370mm.
Thickness: 100mm.
Thermal Conductivity: 0.039 W/mK.
Water Absorption (@100% RH): 30% w/w.
Specific Heat Capacity: 1800 Jkg-1K-1.
Ignition Point: >500°C.
Density: 18 kgm-3.
Can be used to achieve airborne sound reduction of Rw = 40dB.


  • Roofs: loft & warm roof.
  • Walls: timber frame & solid (internal).
  • Floors: all levels above DPC.
  • Acoustic: walls, floors & roofs.


Length 6500mm Thickness 100mm Width 370mm


Application Between Rafter
Internal Walls
Stud Walls
Above Rafter
Material Sheeps Wool Range Thermafleece


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Questions & Answers


How does a 100mm of sheep's wool compare to 100mm of fibre glass thermal values


Based upon thermal resistance and conductivity, 100mm sheepswool has a higher resistance and a lower conductive rate so overall will be a more thermally efficient product. 


What is the linear meterage per roll?


6.5 meters

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5 / 5 10 reviews
Michael Crisp
11th October 2021
Good quality natural fibre
26th April 2021
Always a great product. Now it’s tearable by hand it’s even easier to install.
Dave Bishop
5th April 2021
Expensive but lays easy and offers great insulation
9th February 2021
Product is great and easy to work with. Watch out for torn packaging on delivery.
23rd November 2020
Easy to handle. Very easy to lay. Very pleasantly surprised buy just how easy the thermafleece is to lay. Easy to tear to length even in confined spaces.
3rd November 2020
I purchased Thermafleece as have completely replaced what we have in the loft. I had to don the usual full body suit, mask and goggles to get rid of the very very old fibreglass, then vacuumed out the whole space to get clean. Now installing the wool and it’s so nice to work with, and already feeling warmer rooms in the house as I get through the install. Really recommend this stuff!
28th October 2020
Applied under suspended floor from underneath. Goes up easy, simple to tear width ways, length ways needs cutting tools as per fitting instructions. Definitely has a sheepy smell which is still prevalent a month or so after installation. Not overbearing but present. I’m hoping it reduces over the coming months. Can’t comment on heat loss yet, will need to wait until the temp drops.
Nick Sneller
16th August 2020
fantastic use of natural resource, easy to use with no waste
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Sheeps Wool Loft Insulation CosyWool by Thermafleece 100mm x 370mm - 7.22m2

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