About Thermafleece

Thermafleece is a highly thermally efficient insulation and is the only British wool insulation to be BBA certified - (02/3950). Meaning that it totally complies with Building Regulations, in between joists in ventilated and unventilated lofts; under pitched roofs and between rafters for tiled or slated pitched roofs, as well as timber frame wall applications between studding with a weather resistant cladding, and a ventilated and drained cavity.

Thermafleece is made using the wools from sheep that graze the upland areas of the UK , breeds such as Swaledale, Herdwick, Scotch Blackface and Welsh Mountain to create an exceptionally efficient thermal and acoustic building insulation.

Second Nature UK manufacture Thermafleece in Yorkshire , the heart of the woollen and textile industry. The company aims to stimulate the rural economy by adding value to British wool, a natural fibre from a fully renewable resource and an incredibly efficient and versatile raw material.

Manufactured to a density of 25kg/m3 giving a thermal conductivity or K value of 0.039 W/mK. Thermafleece is sold in three thicknesses, 50mm, 75mm and 100 mm, which can be layered to achieve your required depth and two widths or 'centres' of 400 or 600 mm.

Thermafleece gained Energy Savings Recommended Approval from the Energy Saving Trust in 2007. Recommended products have to adhere to strict criteria, which are independently tested, to ensure that people can be confident that the product they are buying meets the very highest standards in energy efficiency.

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