Modified bitumen roofing is a popular choice for flat or low-slope roofs, known for its durability and waterproofing qualities. However, leaks around pipe boots, which are the seals around plumbing vents and other roof penetrations, can sometimes become a problem. These leaks often happen because the rubber or metal boots age, crack, or pull away from the modified bitumen surface due to weather exposure, temperature changes, or poor installation. Simple diagnostics for this issue include visually inspecting the pipe boots for cracks, gaps, or signs of dryness and checking around the base for any water staining or dampness inside the attic or ceiling below. It’s safe for homeowners to perform these checks from a ladder or roof edge, but anything beyond a basic inspection—like trying to re-seal a boot without proper knowledge—can risk further damage or personal injury.
If you spot any issues with pipe boots or suspect a leak but can’t pinpoint the source, it’s best to call a licensed roofing contractor with experience in modified bitumen systems. A roofer will know whether a simple boot replacement or a more extensive patch is needed and can ensure the repair won’t void your roof’s warranty. When speaking to a contractor, asking questions like, “What type of pipe boot materials and sealants do you recommend for long-term durability on modified bitumen roofs?” and “Can you confirm that this repair will maintain my roof’s warranty coverage?” will help you get clear answers and confidence in their work. Always prioritize professional repairs because leaks at pipe boots can quickly lead to water damage inside your home if left unresolved.