EPDM, or ethylene propylene diene monomer, is a type of rubber roofing material commonly used for low-slope or flat roofs. One of its main advantages is its durability—it’s highly resistant to weather extremes, UV rays, and ozone, which helps it last 20 to 30 years when installed properly. EPDM is also flexible, making it a good choice for roofs that experience temperature fluctuations or structural movement. It’s relatively lightweight, easy to install, and typically comes in large sheets, reducing seams where leaks might occur. This material is also environmentally friendly since it can be recycled, and it’s commonly available in black or white, allowing for some energy efficiency depending on your climate. However, EPDM can be vulnerable to punctures from sharp objects or foot traffic, and its black versions tend to absorb heat, which might increase cooling costs in warmer areas. White EPDM can help with this but usually costs more upfront.
If you want to check your EPDM roof yourself, look for visible cracks, wrinkles, or blisters, especially around seams and flashing. Run your hand gently over the surface to sense any soft spots that might indicate water pooling or damage underneath. Make sure there are no loose seams or areas where the adhesive has failed. Small punctures or tears can often be repaired with an EPDM patch kit, but larger damage or leaks usually call for a professional inspection. When contacting a roofer, it’s smart to ask about their experience with EPDM specifically and how they handle warranties on their workmanship and materials. You can also inquire whether they recommend fully glued systems or mechanically fastened ones for your roof’s unique needs. This helps ensure you’re getting a durable repair or installation that keeps your roofing warranty intact.