Materials
What is EPDM?
Roofing Glossary · Materials
Definition
Ethylene Propylene Diene Monomer — a synthetic rubber roofing membrane available in black or white, used primarily on low-slope commercial and residential roofs. EPDM is known for UV resistance, flexibility in cold temperatures, and lifespans of 20-30 years. It is installed fully adhered, mechanically fastened, or ballasted. Seams are glued rather than heat-welded, which represents the primary maintenance concern over the roof's life.
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