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Sheepwool Insulation

(26 Products)

In an era where sustainability and eco-consciousness take centre stage, it's crucial to consider innovative and natural solutions for our homes. One such solution that has been gaining traction in recent years is sheep wool insulation. Sheep wool insulation is a sustainable, efficient, and versatile insulation material that harnesses the power of nature to enhance our living spaces. Its remarkable thermal insulation capabilities, moisture control, sound absorption, and eco-friendly properties make it an attractive choice for homeowners and contractors seeking sustainable solutions. 

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What Is Sheepwool Insulation? 

Sheep's wool is a remarkable natural fibre with unique properties that make it an excellent insulation material. It has been used for centuries to provide warmth and protection against the elements. 

Thanks to its wool fibre composition, sheep wool possesses remarkable thermal insulation capabilities, making it an ideal choice for both cold and warm climates.

Its natural structure allows it to trap air within its fibres, creating an insulating layer that slows down heat transfer. 

This property helps to maintain a comfortable and consistent temperature within the living space, reducing the need for excessive heating or cooling.

Sheepwool Moisture Control

One of the outstanding features of sheep's wool is its ability to absorb and release moisture without compromising its insulating properties. 


Sheep wool fibres absorb up to 30% of their weight in moisture without succumbing to the detrimental effects of damp, helping to regulate humidity levels and prevent the growth of mould and mildew.

Sheepwool Sound Absorption

Beyond its thermal efficiency, sheep wool insulation also excels in sound absorption. 

The fibrous structure of this natural insulation helps to reduce airborne sound transmission, minimising noise pollution and creating a quieter and more peaceful living environment. 


This makes it particularly suitable for spaces such as bedrooms, home offices, and media rooms.

Sheepwool Insulation Key Features

  • Wool fibres absorb moisture 
  • Absorbs up to 30% of its own weight in moisture
  • Natural fibre insulation - Manufactured from natural materials
  • No plastic fibres
  • Environmentally friendly
  • Thermal conductivity: 0.035 – 0.04 W/mK
  • Tiny air pockets trap air and slow heat transfer
  • Excellent thermal and acoustic performance


We stock CosyWool and UltraWool high density sheep wool solutions from the renowned brand, Thermafleece. Both Thermafleece CosyWool and UltraWool boast a rich wool blend combined with recycled polyester to provide optimum comfort and thermal efficiency, ensuring you save on heating bills. 


Explore our full range of insulation materials on our designated
Insulation homepage. We stock a host of insulation products from loft insulation to floor insulation. 


Frequently Asked Sheepwool Insulation Questions

What Makes Sheep's Wool So Thermally Effective? 

Both sheep wool's acoustic and thermal qualities derive from its crimped nature. The close-knit formation of the wool fibres creates an air-pocket-filled product in which air is trapped. 

This composition slows the transfer of heat and is thus effective in keeping buildings warm in winter and regulated in summer. 

Wool also possesses remarkable inherent insulation qualities owing to its hygroscopic nature. It has the ability to absorb and release water vapour as atmospheric humidity fluctuates. 


During the absorption phase, the process generates and retains heat, which enables wool to function as a highly effective natural insulator. 

Why Choose Sheeps Wool Insulation? 

Sheep wool insulation is a popular choice for those looking for natural and environmentally friendly insulation solutions. It is a renewable resource, biodegradable, and has a low carbon footprint. 

It also has excellent moisture-wicking properties and can help regulate indoor humidity levels.

Is Sheep's Wool Insulation Prone To Mould or Pest Infestation? 

Sheep wool insulation has natural moisture-wicking properties that make it resistant to mould growth. 


The lanolin present in sheep wool acts as a natural repellent to pests such as moths and dust mites. 


However, it is important to ensure proper ventilation in the insulated space to minimise moisture buildup and maintain a healthy indoor environment.

What Is Lanolin? 

Lanolin is a natural wax-like substance that is derived from sheep's wool. It is produced by the sebaceous glands of sheep to protect their wool and skin from environmental elements such as moisture and extreme temperatures.


Due to its excellent water-repellent characteristics, lanolin has been traditionally used to treat and protect wool fibres. It acts as a natural waterproofing agent, providing resistance to moisture, dirt, and stains.


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