Ethylene Propylene Diene Terpolymer – better known as EPDM – is a single-ply synthetic rubber roofing membrane, ideal for low-slope buildings. A proven roofing option for nearly 50 years, EPDM is now more popular than ever thanks to its outstanding track record of long-term sustainable performance in the field. Even after decades of extreme weather, EPDM has been shown to perform like new. Diamond Roofing offers experience and expertise with EPDM. We’ll help you determine if it’s right for your building, then select the most appropriate style – either a ballasted, mechanically attached or fully adhered system.