Thermafleece CosyWool slab is versatile insulation rich in British sheep’s wool and is a great choice for insulating walls and roofs. 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.
CosyWool Slabs are flexible but denser than rolls and sized to provide extra tight friction fit in walls and roofs providing excellent thermal and acoustic performance.
- Technical Documents
- Application Advice
<p>Thermafleece CosyWool flexible slabs can be cut using a straight edge and a Stanley knife, or simply torn apart.</p>
<p>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.</p>
Thermafleece CosyWool flexible slabs are 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 CosyWool is not irritating to the skin, eyes or respiratory tract.
To retain the benefits of water vapour, absorption and release, Thermafleece CosyWool flexible slabs 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.
- Thermal Conductivity: 0.038 Wm-1K-1
- Density: 22 kgm-3
- Water Absorption (@100% RH): 30% w/w
- Specific Heat Capacity: 1800 Jkg-1K-1
- Mould Resistance: CUAP 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, EN 823: Pass
- Dimensional stability to EN 1604: Pass
- Can be used to achieve airborne sound reduction of Rw = 40dB
- GWP (Cradle to Gate): minus 0.2 kgCO2e
- Embodied Energy (Net of Non-Fossil Feedstock Energy): 7 MJkg-1
- Recycled Content: 20%
- Recyclable: Yes
Plastic is necessary for packing quilted natural insulation. At present there is no alternative material available that provides adequate protection for our products during transit and storage. We are constantly reviewing this position. In our case, not only does plastic packaging protect the product, it also enables our supplier to compress the insulation greatly reducing packaging waste and carbon miles from factory gate to our warehouse, to you the customer. Our Thermafleece suppliers use recycle code 4 LDPE for all of their packaging. Most of the insulation is compress packed in order to minimise packaging. Compress packing also enables them to reduce the thickness of packaging. The packaging weight per sqm of 100mm Thermafleece CosyWool is 22g per sqm their packaging waste is around a quarter of that from alternative brands of natural insulation.
Thermafleece CosyWool flexible slabs 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.