ROCKWOOL International of Denmark is the world's leading producer of stone wool insulation made from natural stone and recycled slag. ROXUL Inc. is the North American operation of ROCKWOOL International. Headquartered in Milton, Ontario, ROXUL North American production facilities are located in Milton, ON, Grand Forks, BC and our newest Rockfon factory in Byhalia, Mississippi, which was built to keep pace with increasing global demand for stonewool ceiling tiles. All of our employees operate within a culture of trust and empowerment allowing for freedom and cooperation resulting in measurable positive business results.