EPDM (ethylene propylene diene monomer) is a popular single-ply roofing membrane mainly used on flat or low-slope roofs. It's known for its excellent weather resistance and flexibility, particularly in extreme temperatures. Replacement cost varies widely depending on the roof’s size, condition, and accessibility, but expect an average price range of $5 to $10 per square foot, including materials and labor. The membrane itself is relatively inexpensive, but installation involves additional components like tape, adhesives, and possibly insulation. Costs can increase if there is water damage or if the old roofing material needs full removal. Simple DIY checks include looking for visible tears, cracks, or areas where the membrane feels loose or wrinkled. Checking the seams for separation or bubbling can also indicate potential leaks. Because EPDM is typically warrantied for 20-30 years, it’s essential to verify whether your roof is still covered, which can affect replacement decisions.
If you notice persistent leaks despite patching or large damaged areas, it’s time to call a roofer for a professional evaluation. When selecting a contractor, ask how they handle existing warranties and if they offer options to repair versus completely replace the roof. Also, inquire about their experience with EPDM specifically, since proper seam adhesion and handling is key for a durable finish. Confirm whether they use manufacturer-approved products and techniques to ensure your new roof maintains warranty coverage. A good roofer will provide a clear estimate, explain the process beforehand, and inspect the decking for any hidden damage before starting replacement. This insight helps you avoid unexpected costs and ensures you get the best performance out of your new EPDM roof.