ULTRAL EPDM 150 is an Ethylene Propylene Diene Monomer ( EPDM ) elastomeric sheet membrane for sealing critical areas of the envelope and protecting the building structure from extreme weather conditions by preventing air, water, and vapor penetrating to the system. ULTRAL EPDM membrane is a lightweight, Fire-retardant EPDM waterproofing membrane sheet that withstands extreme weather cycles with 25 years of warranty support. ULTRAL EPDM has proven that it can withstand extreme temperature fluctuations and constant exposure to direct sunlight also it has exceptional elasticity, offers proven long-term performances for decades, and is environmentally responsible