EPDM (ethylene propylene diene monomer) roofing is known for its durability and weather resistance, but like any roofing material, it can experience some common failure modes. One frequent issue is seam failure, which happens when the adhesives or tapes that join sheets lose their bond over time due to exposure to UV rays, temperature fluctuations, or poor installation. Cracking and splitting can also happen, especially in areas with heavy foot traffic or where the membrane has been exposed to sharp objects or improper repairs. Additionally, ponding water may accelerate membrane degradation or lead to leaks, and punctures caused by debris or hailstorms can create vulnerabilities. Diagnosing these problems can often be done by careful visual inspection, looking for blisters, cuts, wrinkles, or loose seams on the surface of the roof.
Homeowners can safely perform simple checks by scanning the roof after storms or during routine maintenance with binoculars or by walking the roof if conditions allow and the membrane is dry and safe. Look for visible damage, pooling water, or areas that seem excessively soft. However, avoid applying harsh chemicals or abrasive cleaning products that could harm the membrane. If you notice any bubbling, seams pulling apart, or unexplained wet spots inside the building, it's wise to call a professional roofer experienced with EPDM. When consulting a contractor, ask specifically how they approach seam repairs and what warranties they offer on materials and workmanship. Also, inquire about their method for ensuring proper drainage to prevent ponding water issues, which can greatly extend the life of your EPDM roof.