75mm ThermaFleece CosyWool Loft Insulation Roll

ThermaFleece CosyWool Sheep's Wool Loft Insulation - 75mm x 570mm

Combining natural performance with excellent value, 75mm ThermaFleece CosyWool Sheep Wool Loft Insulation comprises a premium blend of 75% natural sheep's wool and recycled fibres. Testing demonstrates this formulation achieves superior thermal performance compared to higher wool-content alternatives.

Engineered for loft insulation and internal spaces, the 75mm CosyWool variant is straightforward to fit, comfortable to handle, and designed for durability. Natural wool fibres actively capture airborne contaminants, fostering improved indoor air quality, whilst its moisture-regulating capacity ensures sustained structural integrity.

This sustainable insulation arrives in compressed form, cutting transport emissions by approximately 50%, then expands to full depth upon 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: 75mm ThermaFleece CosyWool Roll
3. Board size: 75mm x 570mm
4. Width: 570mm
5. Length: Length: 8.5m
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: 9.69m² per pack
9. Thermal Conductivity 0.039 Wm-1K-1
10. Thermal Resistance: 1.92 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

• 75mm natural sheep wool insulation combined with recycled fibres
• Outstanding thermal performance delivering 0.039 W/mK thermal conductivity
• Moisture-regulating capacity absorbs up to 30% w/w at 100% RH whilst maintaining performance
• Superior fire resistance with ignition temperature exceeding 500°C
• Non-irritant, breathable, and straightforward to install without specialist equipment
• 18 kg/m³ density providing reliable thermal and acoustic properties
• High specific heat capacity of 1800 Jkg⁻¹K⁻¹ stabilises internal temperature fluctuations
• Acoustic performance up to Rw 40dB, suitable for acoustic insulation applications
• Supplied in compressed format to minimise transport carbon footprint

Suitable Applications

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

ThermaFleece CosyWool represents an excellent solution for UK property owners and construction professionals seeking natural, breathable, energy-efficient insulation combining performance, comfort, and environmental responsibility.

Installation & Handling – ThermaFleece CosyWool Rolls

ThermaFleece CosyWool insulation rolls are non-hazardous and pleasant to install, enabling rapid, trouble-free fitting. The material causes no skin, eye, or respiratory irritation, permitting installation without gloves or protective equipment. When working in confined or poorly ventilated spaces including lofts, appropriate PPE such as a dust mask is advisable.

To preserve the natural breathability characteristics, 75mm ThermaFleece CosyWool pairs effectively with vapour-permeable underlay, promoting moisture management and robust building performance.

For optimal results, keep insulation sheltered and elevated before use. Following unpacking, shield from extended sunlight, moisture, or wet conditions to maintain thermal and acoustic properties.

Info

Explore our complete ThermaFleece Insulation range. We deliver across the UK Mainland. To discuss product suitability for your application, request a bulk discount quotation, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Competitive UK Insulation Pricing.