50mm ThermaFleece CosyWool Roll 570mm

ThermaFleece CosyWool Sheep's Wool Loft Insulation - 50mm x 570mm

Combining outstanding thermal performance with exceptional value, 50mm ThermaFleece CosyWool Sheep Wool Loft Insulation comprises a premium blend of 75% natural sheep's wool and recycled fibres. Independent testing demonstrates this formulation achieves superior insulation results compared to products containing higher wool percentages alone.

Engineered for loft insulation and internal applications, the 50mm CosyWool variant is straightforward to install, comfortable to handle, and engineered for durability. Natural wool fibres actively capture airborne contaminants, fostering improved indoor air quality, whilst its moisture-regulating capabilities enhance long-term structural integrity.

This robust and environmentally responsible insulation arrives in compressed form, cutting transport-related carbon emissions by approximately 50%. The material expands to its full working thickness following 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: 50mm ThermaFleece CosyWool Roll
3. Board size: 50mm x 570mm
4. Width: 570mm
5. Length: Length: 13m
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: 14.82m² per pack
9. Thermal Conductivity 0.039 Wm-1K-1
10. Thermal Resistance: 1.28 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

• 50mm 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 solution for property owners and construction professionals seeking natural, breathable, energy-efficient insulation that combines comfort, performance, and environmental responsibility for UK properties.

Installation & Handling – ThermaFleece CosyWool Rolls

ThermaFleece CosyWool insulation rolls are non-hazardous and pleasant to work with, enabling swift and hassle-free installation. The material causes no irritation to skin, eyes, or airways, permitting handling without gloves or specialist protective equipment. When installing insulation in confined or inadequately ventilated spaces including lofts, wearing appropriate PPE such as a dust mask is advised.

To preserve the natural breathability characteristics of the insulation, 50mm ThermaFleece CosyWool works effectively with a vapour-permeable underlay, promoting moisture management and optimal building performance.

For optimal outcomes, keep insulation sheltered and elevated off surfaces. Following unpacking, shield it from extended direct sunlight, wet conditions, or dampness to safeguard its thermal and acoustic properties.

Info

Explore our ThermaFleece Insulation range. We deliver throughout the UK Mainland. To discuss product suitability for your application, obtain a bulk discount quote, or require further assistance, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk, or use our Live Chat service - Competitive UK Insulation Pricing Available.