What is EPDM and what is it used for? EPDM stands for ethylene propylene diene monomer. In layman’s terms, it is an extremely durable synthetic rubber roofing membrane commonly used on commercial roofing systems.

Many homeowners like to tinker with their roof, sweeping or blowing off leaves and other debris, sometimes removing snow, and even replacing damaged shingles now and then. Unless you’re a certified roofer, however, that’s probably the extent of what you know about your asphalt shingle roof.