Sheep’s Wool Insulation: Thermafleece UltraWool

Thermafleece Ultrawool

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Thermafleece UltraWool Sheep’s Wool Insulation Batts


Thermafleece UltraWool sheep’s wool insulation is a high density ultra-efficient insulation rich in British wool. It’s the ideal choice if you are looking for maximum thermal performance when space is at a premium.

With a Thermal Conductivity of 0.035 W/mK, Thermafleece UltraWool sheep’s wool insulation is the best performing natural fibre-based insulation on the market. What’s more, with a density of 31 kg/m3, Thermafleece UltraWool helps provide exceptional acoustic insulation performance in wall, floor and roof systems.

Research shows that using 75% wool in combination with recycled fibres outperforms alternative products with a higher percentage of wool. The Thermafleece wool rich blend ensures you get the full benefit of sheep’s wool with enhanced performance, durability and sustainability.

Like all Thermafleece products, it is long-lasting, safe to handle and contributes to a healthier indoor environment by regulating moisture and absorbing harmful airborne substances in the home. Thermafleece is manufactured and supplied in accordance with ISO 9001 quality and ISO 14001 environmental management systems.

Select this product when acoustic and/or thermal performance is most important.

Thermafleece UltraWool is harmless and can be installed without gloves or protective clothing (although we recommend you wear a dust mask in enclosed spaces such as lofts). It is not irritating to the skin, eyes or respiratory tract.

To retain the benefits of water vapour, absorption and release, Thermafleece UltraWool may be used in conjunction with a vapour permeable underlay. Protect the insulation from prolonged exposure to sunlight when unpacked and avoid wetting for extended periods, store under cover and clear of the ground.

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Size (mm)
50 x 390 x 1200
50 x 590 x 1200
70 x 390 x 1200
70 x 590 x 1200
90 x 390 x 1200
90 x 590 x 1200