EPDM is an abbreviation for the chemical name of the single-ply rubber material used in many flat-roofed commercial buildings today — Ethylene Propylene Diene Monomer. EPDM roofing systems may also be called Thermoset systems, and these roofs are durable, versatile, and easy to install compared to many others. The term “Thermoset” means that the material cannot be reshaped by heating, and so it is resistant to thermal stress (defined below).

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