Sheep Wool Insulation

The Complete Guide to Sheep Wool Insulation in the UK

Sheep wool insulation is a natural, sustainable insulation material that offers excellent thermal and acoustic performance for homes across the UK. With growing demand for eco-friendly insulation products, sheep wool insulation is becoming a popular choice for both new builds and retrofit projects. Whether you're insulating lofts, walls, or floors, this natural fibre insulation provides superior energy efficiency and comfort.

What is Sheep Wool Insulation?

Sheep wool insulation is made from 100% British sheep’s wool, often blended with recycled polyester to enhance durability and flexibility. This natural insulation material forms millions of tiny air pockets within the wool fibres, creating an effective barrier against heat loss and noise. Brands like Thermafleece and Sheepwool Insulation lead the market with high-performance products such as Thermafleece Cosywool and Ultrawool.

Benefits of Sheep Wool Insulation

• Sustainable and Environmentally Friendly – Sheep wool insulation is made from renewable resources, making it a sustainable insulation option that reduces carbon emissions.

• Superior Thermal Performance – Sheep wool fibres provide exceptional thermal resistance with conductivity ratings between 0.035 and 0.04 W/mK, ensuring homes stay warm in winter and cool in summer.

• Moisture Regulation – Wool can absorb up to 33% of its weight in moisture without compromising insulation performance. It naturally regulates indoor humidity and prevents condensation buildup.

• Acoustic Properties – Wool fibres provide excellent acoustic insulation, reducing noise and enhancing indoor comfort.

• Fire Retardant – Sheep wool is naturally fire retardant due to its high nitrogen content, self-extinguishing when the flame source is removed. It only begins to burn at temperatures above 560°C.

• Air Purification – Wool absorbs harmful substances and neutralises indoor pollutants, creating healthier living environments.

• Safe and Non-Toxic – Sheep wool insulation is safe to handle, free from harmful chemicals like formaldehyde, and does not irritate skin.

Applications of Sheep Wool Insulation

• Loft Insulation – Thermafleece Cosywool rolls provide excellent coverage for loft spaces, reducing heat loss through the roof.

• Wall Insulation – Sheep wool insulation can be installed in stud walls for improved thermal and acoustic insulation.

• Floor Insulation – Wool insulation can be used under floors, providing a warm and comfortable environment.

• Underlay – Acoustic underlay made from sheep wool enhances sound insulation for floors.

• Roof Spaces – Ideal for insulating roof cavities and rafters to prevent heat loss and improve thermal efficiency.

• Acoustic Barriers – Excellent for use in soundproofing walls and floors, enhancing indoor acoustics.

Why Choose Sheep Wool Insulation?

• Natural Fibre Insulation – Wool is a natural insulator that outperforms many synthetic options.

• Healthier Indoor Environment – Wool fibres contribute to healthier indoor air quality by absorbing VOCs (volatile organic compounds) and regulating humidity.

• Durable and Long-Lasting – Sheep wool insulation can last for decades, maintaining its performance over time.

• User-Friendly Installation – Easy to cut and fit, sheep wool insulation is safe to handle without protective gear or the risk of skin irritation.

• Biodegradable – Fully biodegradable at the end of its life, making it a zero-waste product.

Leading Sheep Wool Insulation Products

• Thermafleece Cosywool – Known for its superior thermal and acoustic performance, this insulation is ideal for walls, floors, and lofts.

• Thermafleece Ultrawool – Offers enhanced thermal performance and fire retardancy.

• Sheepwool Insulation Silentwool – Provides excellent sound insulation and can be used under flooring.

• Supasoft Insulation – A product that blends wool with recycled polyester for enhanced performance.

How Sheep Wool Insulation Works

Sheep wool insulation works by trapping millions of tiny air pockets within the wool fibres. These air pockets slow down heat transfer, resulting in effective thermal insulation. Wool also naturally absorbs sound, making it an excellent choice for soundproofing and acoustic insulation.

Additionally, wool's ability to absorb and release moisture without compromising its insulation properties helps regulate indoor humidity, creating a healthier living environment.

Installation and Handling

• Easy to Cut and Fit – Wool insulation can be cut using a simple hand saw or knife.

• Safe to Handle – Unlike fiberglass or rock wool insulation, sheep wool does not irritate the skin or lungs, making installation safer and more comfortable.

• Versatile Applications – Wool insulation is suitable for lofts, walls, and floors, and can also be used as acoustic underlay.

Conclusion

Sheep wool insulation is a sustainable, high-performance solution for insulating homes in the UK. Its combination of thermal efficiency, sound insulation, and moisture regulation makes it a versatile and eco-friendly option for homeowners and builders. Whether you're insulating a loft, wall, or floor, sheep wool insulation offers long-lasting performance and significant energy savings.

Choose sheep wool insulation for a healthier, more comfortable, and environmentally friendly home.