
Wool Insulation Wales manufactures high-performance Welsh wool insulation for people who want buildings that are healthier, more sustainable, and built to last.
We help architects, homeowners and heritage specialists create breathable, natural, comfortable spaces without compromising on performance.
Warm, breathable and moisture-balancing insulation. 100% wool and manufactured in the UK

Wool Insulation Wales exists for people and projects where standard insulation simply isn’t good enough, where breathability, sustainability, occupant wellbeing and long-term building health genuinely matter.
We manufacture high-quality wool insulation in Wales, using locally sourced materials and modern processes.
Unlike mass-produced synthetic insulation, wool offers natural moisture control, breathability, acoustic performance, longevity and fire resistance, all without the environmental cost.
Our mission is simple:
To help people insulate buildings properly - in a way that respects the structure, protects the occupants, and supports a sustainable future.
We don’t compete on being the cheapest.
We compete on being right for the right buildings, for the right reasons.

• Composition: 100% British sheep’s wool, no synthetic fibres or binders
• Origin: Manufactured in Wales using traceable UK wool
• Thermal conductivity (λ): 0.040 W/m·K
• Density: ~20 kg/m³
• Thicknesses: 50 mm & 75mm (layer for additional thickness as required)
• Width options: 400 mm and 600 mm rolls
• Roll length: 8m
• Fire rating: Euroclass E (EN 13501-1)
• Moisture control: Hygroscopic – absorbs and releases moisture naturally
• Carbon storage: Approx. 1.6 kg CO₂e stored per m² of 50 mm insulation
• End-of-life: Fully recyclable / compostable
• Health & safety: Non-itch, safe to handle without PPE
• Made in: UK Brand: Truewool® Manufacturer: Wool Insulation Wales Ltd
British Wool represents the UK's 35,000 sheep farmers. We are a British Wool license holder and our products carry the Welsh Wool logo guaranteeing provenance. See more here
The IAA framework gives homeowners the confidence that insulation work is carried out to the highest standards with products made to meet those standards. Find us on the system supplier page here
The Alliance for Sustainable Building Products is a non-profit organisation with a single mission: To lead the transformation to a healthy low carbon built environment by championing the understanding and use of demonstrably sustainable building products. Find us in the members' directory here





Wool Insulation Wales Limited. Company No. 1441300
First Floor,1 St John's Court, Upper Fforest Way, Enterprise Park, Llansamlet, Swansea SA6 8QQ