EPDM, also known as Ethylene Propylene Diene Monomer, is a synthetic rubber membrane that has a chemical cross­link between ethylene and propylene, which gives it its outstanding strength and stability. Installation of EPDM can be done by being ballasted, adhered, or mechanically attached and is commonly used in low­slope buildings. EPDM is well known for to be weatherproof. It is also flexible in low temperatures, heat & fire resistant, resists moisture damages such as condensation and water build­up, and has ultraviolet radiation resistance due to a compound called carbon black which absorbs the UV rays and converts it to heat. Once it is properly installed and with minimal maintenance, EPDM should last between 12 to 25 years.