Torch-down roofing is a type of flat roofing system where a modified bitumen membrane is applied using a propane torch to melt the underside and create a waterproof seal. Ridge vent leaks can happen when the vent flashing or seals around the ridge vent degrade or were improperly installed during the torch-down application. Heat from the torch can sometimes cause uneven adhesion or damage to the vent materials if not carefully controlled. Over time, UV exposure and weather conditions may cause cracks or gaps in the membrane around the ridge vent, allowing water to seep through. Homeowners might notice water stains on the ceiling directly below the ridge or feel moisture when touching the vent area during rain. A simple DIY check involves carefully inspecting the ridge vent and surrounding membrane for visible cracks, loose edges, or bubbling. Using a flashlight inside the attic during rain can also help spot leaks.
If you suspect a ridge vent leak around your torch-down roof, it’s best to call a licensed roofer experienced with torch-down systems. Fixes typically involve resealing the membrane edges, repairing any torn flashing, or replacing damaged vent components. When discussing with a contractor, ask if they use proper heat control methods to avoid damaging the existing membrane, and how they ensure a watertight seal around the ridge vent. Also, inquire about warranty coverage for the repair work and how long it typically lasts. Remember, torch-down roofing can be complex, and improper repairs risk voiding manufacturer warranties or causing further leaks, so professional expertise is key.