Rockwool International A/S (Rockwool) manufactures and sells stone wool insulation products. It offers insulation products and solutions for all major applications in the areas of residential and non-residential buildings. The company also offers other building-related products such as ceilings, facade panels, engineered reinforcement fibers, and outdoor noise and vibration control solutions. Rockwool also creates green solutions for the horticultural industry; effective insulation for the process industry, marine and offshore; special fibers for industrial use; and noise and vibration systems for modern infrastructure.

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The company’s research and development activities cover product development, material research, and the creation of new or improved production systems and procedures. It collaborates with academic institutions as well as public and private partners to support research initiatives and practical technological application. In 2023, 244 brand-new patents were issued. The company reported an R&D expenditure of EUR64 million in FY2023, which is 1.8% of the company's revenue.