Brand Spotlight: Thermafleece and Wool Insulation
At the heart of the Lake District, amid rolling hills and flocks of sheep, Eden Renewable Innovations Ltd. (ERI) has been creating sustainable products for over two decades. Their flagship brand, Thermafleece, has become a leader in the UK’s natural fibre insulation market, offering an eco-friendly alternative to conventional insulation.
Mark Lynn, Managing Director, explains,
“Inspired by the sheep in rural Cumbria, we create products that use natural, renewable resources to benefit people and the planet.”
Why British Wool Matters
Thermafleece products are built on the qualities of British wool, particularly that sourced from hill sheep.
“The wool we use comes from British Hill sheep; this coarser, coloured wool is ideal for insulation but not suitable for carpets or clothing. The crimp and elasticity of these fibres trap the air effectively, enhancing the thermal performance of the insulation,” says Mark.
Using local wool also supports the environment and the economy. “Using British wool reduces transportation distances, lowering the carbon footprint of the insulation whilst supporting local farmers and the UK wool industry,” Mark adds. “It’s a practical, ethical and environmentally friendly choice that suits both the needs of insulation and our own sustainability ethos.”
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Partnering with UK Farmers
Strong relationships throughout the supplier chain including farmers are central to Thermafleece’s approach.
“Over the past 25 years, we have built strong relationships with wool suppliers and producers across the UK. Today, we continue to manufacture Thermafleece in Britain, reinforcing our commitment to local production and sustainability,” says Mark.
Close collaboration with farmers ensures both quality and integrity. “Farming is something we care deeply about, we farm over 3,000 sheep ourselves, so we understand first-hand the standards, challenges, and dedication involved. By sourcing our wool from British Wool’s auctions, we help to strengthen the local supply chain, promote high welfare and quality standards, and play a part in securing the future of the industry,” Mark explains.
Wool: A Natural Choice for Sustainability
Beyond performance, British wool carries a strong sustainability story. “British wool contributes to a more responsible and environmentally aware society by being a natural, renewable, and locally sourced material. Using wool in insulation reduces energy consumption, improves indoor air quality, and supports the long-term health of buildings and occupants,” Mark notes.
For customers, choosing wool is not simply a purchase decision, but a commitment to something bigger.
“We tell our customers that choosing wool is more than just about buying a product – it is about supporting local industry, community, the environment and the British supply chain. Wool is 100% natural and renewable, planet friendly, temperature regulating and breathable, making it a healthy choice for buildings, their occupants and the environment,” Mark adds.
With pressures on British farming increasing, every choice matters. “By choosing wool and wool-based products, customers are making a positive lifestyle choice that supports British farming, rural livelihoods and a more sustainable future,” he concludes.
Case Studies
Here’s a selection of projects using Thermafleece insulation, highlighting environmental impact and performance benefits.