ThermaFleece CosyWool 100mm Flexible Slab

100mm ThermaFleece CosyWool Slab is a flexible, high-performance insulation solution delivering comprehensive thermal and acoustic benefits at competitive pricing.

Manufactured from a wool-rich fibre blend that's thermally bonded, this 100mm slab provides exceptional durability and long-term dimensional stability, resisting compression. Testing demonstrates this blend achieves superior performance compared to higher wool-content alternatives, combining the advantages of sheep's wool insulation with improved breathability, resilience, and environmental credentials.

Wool represents a natural fibre of outstanding quality. As sheep's fleece develops, it naturally captures carbon dioxide from the air. When applied as insulation, it traps airborne contaminants that could affect health, fostering a cleaner interior atmosphere. Fitting 100mm CosyWool Slab 370mm substantially enhances building energy performance and lowers heating expenditure.

Looking for the 570mm split version? Visit Cosywool 570mm Split

Pack Size & Coverage

1. Thickness (mm): 25, 50, 75, 100, 140, 150
2. Model: 100mm Thermafleece CosyWool Slab
3. Board size: 100mm x 370mm
4. Width: 370mm
5. Length: 1200mm
6. Items per pack: 7
7. Total coverage: 3.11 m² per pack
8. Thermal Conductivity 0.038 Wm-1K-1
9. Thermal Resistance: 2.63 W/m K
10. Density: 18 kg/m3
11. Vapour Resistivity: 9 MN·s·g-1m-1
12. Highly Breathable Yes
13. Vapour open: Yes
14. Sound Absorption: NRC 1.05 @100 mm
15. Made from British wool Yes
16. Made in the UK Yes
17. Contains recycled materials 20%
18. Recyclable Yes
19. Manufactured to ISO 9001 and 14001: Yes
20. Carbon Footprint PAS 20250 (60 year life): 0.50kg CO2e for R1
21. Dimensional Stability to EN 1604: Pass
22. Flammability & Smoulder Resistance (BS 5803-4): Pass

Compared to Thermafleece CosyWool Roll, the slab variant features increased density, providing a secure friction fit within wall and roof cavities. This greater density also improves thermal and acoustic performance, making it suitable for both new construction and retrofit applications.

All Thermafleece British sheep wool insulation products are vapour-permeable and fully breathable, enabling moisture management during high-humidity conditions and supporting a healthy, comfortable living space.

Key Characteristics

1. Robust and reliable insulation, straightforward to trim and fit
2. Safe to handle without protective gloves or specialist equipment
3. Fosters a healthier interior by managing air quality
4. Regulates moisture and captures airborne pollutants, enhancing comfort
5. Works with vapour-permeable membranes for superior breathability
6. Extensively recyclable and environmentally sustainable
7. Responsible disposal options available at end of life
8. Lowers carbon emissions throughout its operational period, advancing sustainable building practices
9. Strengthens acoustic performance with airborne sound reduction to Rw 40dB

Suitable Applications

• Roofs: Lofts, warm roofs, and pitched roof insulation
• Walls: Timber frame walls and solid masonry walls (internal)
• Floors: Suspended ground floors and intermediate floors

Info

Browse our complete ThermaFleece Insulation range. We deliver across the UK Mainland. To discuss product suitability for your project or request a volume discount quotation, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.