Releasing The Natural Power of Stone to Enrich Modern Living. ROXUL, part of the ROCKWOOL Group is the worldÍs leading manufacturer of stone wool insulation. We offer a full range of high-performing and sustainable insulation products for the construction industry. Our insulation products are based on innovative stone wool technology and today we are the worldÍs leading manufacturer of stone wool insulation. The ROCKWOOL group also includes a range of sister companies delivering specialist solutions for the horticultural, marine and offshore sectors. Global presence Our products are in demand across the world. We operate 27 factories in three continents (Europe, North America and Asia) and have a global network of sales offices, distributors and partners. The unique combination of outstanding fire, acoustic and thermal insulation properties, as well as highly recognised sustainability credentials, which we can substantiate through awards given by the Welsh Government. Our products have been installed in domestic, commercial and industrial buildings of all types, from prestige projects including LondonÍs O2 Arena and Hong Kong Airport to family homes, local hospitals and schools.