Synthetic slate is a popular roofing material designed to mimic natural slate but with lighter weight and often better durability. However, like any roofing system, it can experience leaks around pipe boots—those rubber or metal collars that seal around plumbing vents or pipes poking through the roof. Leaks in this area typically happen because of cracked, worn, or improperly installed pipe boots. UV exposure, temperature changes, and general weathering can cause the rubber to crack or the sealant around the boot to deteriorate. Sometimes, flashing can shift or become damaged, compromising the water-tight seal that protects the roof. To check for these issues safely, homeowners can inspect the pipe boots from the ground or a ladder, looking for cracks, splits, or loose material. Checking the attic for signs of water stains or mold around the pipe can also help confirm a leak. Avoid poking or prying at the pipe boot yourself, as this can cause more damage.
If you suspect a leak, it’s a good idea to call a professional roofer who is experienced with synthetic slate roofing. They can assess whether the pipe boot needs replacement or if flashing repairs are required. When speaking with a contractor, ask if they use pipe boots that are compatible with synthetic slate, as not all materials work equally well together and can impact your warranty. Also, inquire about the method they use to seal the boot to ensure a durable, watertight finish—do they use high-quality sealants or pre-formed boots? Proper installation of pipe boots is critical because a poor fix can lead to ongoing leaks or void your roof warranty. Being clear on these points can help you choose the right roofer and get a lasting repair.