Murotex have staff and offices based in Dundee, Scotland and Derbyshire, England and are the suppliers of the world leading Isotex ICF blocks to the UK and Ireland. Isotex is a fireproof product and made from 100% recycled untreated fir wood and 99% pure Portland cement. This amazing product has been used for years through-out the world, creating 400,000 eco-sustainable builds. With U values of 0,15 for the HDIII 38/17 block and 0,11 for the HDIII 44/23 block.