Ethylene propylene diene monomer, or EPDM, is a type of synthetic rubber coating that is commonly used across many industries. It is made from ethylene, propylene, and diene monomers. While natural rubber may deteriorate with exposure to sunlight and ozone and become brittle over time, some synthetic rubbers like EPDM are designed to be able to withstand more extreme conditions and can last much longer. EPDM has many applications due to its durability, flexibility, ability to withstand a wide range of temperatures, and many other properties. It is also the only rubber that is used for making full roofing systems or coatings.