ROCKWOOL Limited is part of the ROCKWOOL Group. Rockwool was founded in 1909 and is a Danish manufacturer with headquarters in Denmark. Rockwool is a leading manufacturer of mineral wool and insulation materials. Rockwool is the second-largest maker of insulation materials and continues to grow. They have one factory in Bridgend, South Wales, and over 500 employees across the UK. Rockwool also has businesses in over 39 countries and a very large number of employees.