Thermafleece UltraWool Insulation

Thermafleece UltraWool is a high density, ultra efficient insulation made with a wool rich blend of 75% British sheep's wool and recycled fibres. Specifically engineered for maximum thermal performance where space is limited, it's the ideal choice for walls, floors, and roofs in both new builds and retrofit projects.

With a density of 31 kg/m³, UltraWool not only delivers outstanding thermal conductivity of 0.035 W/mK - the best performing natural fibre insulation on the market - it also provides exceptional acoustic insulation, reducing unwanted noise for a quieter, more comfortable home.

Unlike many alternatives, research shows that Thermafleece's unique wool blend outperforms higher percentage wool products, ensuring enhanced performance, durability, and sustainability. As with all Thermafleece products, UltraWool is safe to handle, long lasting, and contributes to a healthier indoor environment by regulating moisture and absorbing airborne pollutants.

Why Choose Thermafleece UltraWool?

• Superior Thermal Performance 
• Exceptional Acoustic Insulation
• Compact and Efficient
• Sustainable and Low Impact
• Durable and Long Lasting
• Healthy and Safe

Sizes Available

• Thickness: 50mm, 70mm, 90mm
• Width: 390mm, 590mm
• Length:1200mm

Installation and Handling

• Non-hazardous - can be installed without gloves or protective gear ( PPE recommended in confined lofts).
• Protect from prolonged sunlight exposure and keep dry in storage.
• If insulation becomes wet in storage or flooding replace with new.
• When used in walls and floors, spaces filled with UltraWool should be treated as concealed voids for fire safety, with cavity barriers installed as required.
• Not suitable as cavity barrier.

Thermafleece UltraWool is the ultimate choice when you need the best possible natural insulation performance in the least amount of space. Warm, quiet, sustainable, and safe - it's insulation that works for both your home and the planet.