EPDM Roofing

EPDM roofing stands for ethylene propylene diene terpolymer and is a popular roofing choice for low-slope commercial roofing projects. EPDM roofing has a strong dollar value which appeals to building owners.

  • Economic Value – Historically, ballasted EPDM roofing has the lowest installed cost per square foot, followed by mechanically fastened and fully adhered systems. Ease of repair and modification contributes to the strong dollar value of EPDM roofs, an attribute that appeals to building owners.
  • Environmentally Friendly – For designs requiring a colored surface, an ENERGY STAR approved coating can be applied. The EPDM surface allows for a robust bond with the coating that results in long-term performance. EPDM also has high emissivity (the percentage of absorbed energy a material can radiate away from itself). This high emissivity allows the heat energy to be reflected back into the atmosphere instead of being absorbed by the building. As a result, a building can “cool off” faster at night during the heat of the summer.
  • Continuous Product Innovation – EPDM membrane formulations have remained relatively constant for the past 30 years, with roof systems installed in the 1970s still performing well. In response to technological advancements, membrane research and contractor requests for more ergonomic products, EPDM accessory products continue to evolve in order to meet the demands of the industry.
  • Physical Properties – EPDM is an elastomeric polymer synthesized from ethylene, propylene and a small amount of diene monomer, compounded with carbon black, processing oils and various cross-linking and stabilizing agents. EPDM maintains its physical properties for decades.

Information provided by the EPDM Roofing Association.