LANXESS India Private Limited manufactures Radical Roofing System. LANXESS India Private Limited is an ISO 9001 and ISO 14001 certified company. Radical Roofing System is made from ethylene-propylene rubber [EPDM] for windows and doors, joint-sealing materials or rubber sheets for covering flat roofs to sealing profiles for roofing structures built from plastic sheets. These are used for weathering and ozone resistance along with its dimensional stability, even under substantial temperature variations. They have to let through sufficient light to enable the natural turf to grow.