EPDM (ethylene propylene diene monomer) roofing is a popular choice for flat or low-slope roofs due to its durability and weather resistance. However, one common area of concern is leaks around pipe boots, the rubber flashing components that seal pipes penetrating the roof. These leaks often occur because of age-related wear, UV damage, or improper installation that causes cracks, shrinking, or loss of adhesion. Over time, the rubber pipe boot can become brittle or develop tears, allowing water to seep through. Additionally, if the boot wasn’t sealed properly around the pipe or the membrane, gaps can form. You can do a simple inspection yourself to diagnose issues: look closely for cracks, splits, or signs of dry rot around the pipe boot. Run your hand near the seams for soft spots or loose edges, and gently press on the membrane to check for separation. After rain or a hose test, check for water inside the attic near the pipe, which is another sign of leakage.
When you notice damage or suspect a leak, a careful DIY approach involves cleaning the boot and surrounding membrane with isopropyl alcohol, then applying a high-quality roofing sealant or patch specifically rated for EPDM. Make sure you use materials compatible with your roof to avoid voiding any warranty. However, if the boot is severely cracked, shrunken, or multiple leaks appear, it’s best to call a professional roofer for a lasting fix. When speaking with a contractor, ask: “How do you ensure the pipe boot is properly sealed to prevent future leaks?” and “Do you use EPDM-compatible sealants and warranty-compliant materials for repairs?” These questions help gauge their expertise and avoid warranty pitfalls, ensuring your roof stays watertight without compromising its integrity.