Ultimate is a new generation Saint-Gobain Isover non-combustible mineral wool with excellent thermal performance for high temperature applications. A new generation of mineral wool Ultimate is a new generation non-combustible mineral wool with excellent thermal performance for high temperature applications (up to 660°C) in the industrial and technical markets. It is produced from finely ground, blended batch materials and is the result of more than 20 years of intense research and development conducted in Europe. Ultimate is manufactured in South Africa in accordance with ISO9001:2008. Like all other mineral wool materials, Ultimate is non-combustible. For more information about Saint-Gobain Isover: http://www.isover.co.za/