150mm Thermafleece CosyWool Wool Roll 570mm

Thermafleece CosyWool Sheep's Wool Loft Insulation - 150mm x 570mm

Combining excellent thermal performance with outstanding value, 150mm Thermafleece CosyWool Sheep Wool Loft Insulation features a high-performance composition of 75% natural sheep's wool blended with recycled fibres. Independent testing demonstrates this formulation achieves superior insulation performance compared to products relying solely on higher wool percentages.

Engineered for loft insulation and internal applications, 150mm CosyWool is straightforward to handle, simple to fit, and engineered for durability. The natural wool fibres actively capture harmful airborne contaminants, fostering improved indoor air quality, whilst its moisture-regulating properties ensure consistent building performance over time.

This sustainable and long-lasting insulation arrives in a compressed state, cutting transport emissions by up to 50%, then returns to its full thickness upon unpacking and installation.

Looking for the 370mm split version? Visit Cosywool 370mm Split

Pack Size & Coverage

1. Thickness (mm): 25, 50, 75, 100, 140, 150
2. Model: 150mm Thermafleece CosyWool Roll
3. Board size: 150mm x 570mm
4. Width: 570mm
5. Length: Length: 4.3m
6. Roll Lengths: 12.0m (25mm) 13.0m (50mm), 8.5m (75mm), 6.5m (100mm), 4.6m (140mm), 4.3m (150mm)
7. Items per pack: 1
8. Total coverage: 4.9 m² per pack
9. Thermal Conductivity 0.039 Wm-1K-1
10. Thermal Resistance: 3.85 W/m K
11. Density: 18 kg/m3
12. Vapour Resistivity: 9 MN·s·g-1m-1
13. Highly Breathable Yes
14. Vapour open:Yes
15. Sound Absorption:NRC 1.05 @100 mm
16. Made from British wool Yes
17. Made in the UK Yes
18. Contains recycled materials 20%
19. Recyclable Yes
20. Manufactured to ISO 9001 and 14001: Yes

Key Features & Benefits

• 150mm Natural sheep wool insulation blended with recycled fibres
• Excellent thermal performance with thermal conductivity of 0.039 W/mK
• Moisture regulating - absorbs up to 30% w/w at 100% RH without losing performance
• High fire resistance with an ignition point above 500°C
• Safe and comfortable to install, non-irritant and breathable
• 18 kg/m³ density for reliable thermal and acoustic performance
• High specific heat capacity of 1800 Jkg⁻¹K⁻¹, helping to stabilise indoor temperatures
• Airborne sound reduction up to Rw 40dB, ideal for acoustic insulation
• Supplied compressed to reduce carbon impact during transport

Suitable Applications

• Loft insulation
• Floors above DPC
• Timber frame and solid walls (internal)
• Warm roofs
• Acoustic insulation projects

Thermafleece CosyWool represents an excellent option for property owners and construction professionals seeking natural, breathable, energy-efficient insulation that combines comfort, performance, and environmental responsibility for modern UK properties.

Installation & Handling – Thermafleece CosyWool Rolls

Thermafleece CosyWool insulation rolls are non-hazardous and pleasant to work with, delivering quick and easy installation. The material causes no skin irritation, eye discomfort, or respiratory issues, permitting handling without gloves or specialist protective equipment. When installing insulation in enclosed or poorly ventilated spaces such as lofts, wearing appropriate PPE including a dust mask is advisable.

To preserve the natural breathability of the insulation, 150mm Thermafleece CosyWool works well with a vapour-permeable underlay, promoting moisture management and healthy building performance.

For optimal results, keep insulation covered and elevated off the ground. Following unpacking, shield it from direct sunlight, rain, or damp conditions to maintain its thermal and acoustic qualities.

Info

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