Spray polyurethane foam (SPF) roofing is popular for its insulation and sealing qualities, but when it comes to ridge vents, leaks can be a tricky issue. Ridge vents allow attic ventilation by running along the peak of the roof, but if the SPF is not applied properly around or over the vent, gaps or cracks can form. These gaps let water seep in during rain or snow, causing leaks. The problem may occur because SPF contracts or shrinks slightly over time or because the ridge vent and foam were not correctly coordinated during installation. Diagnosing a leak involves checking the attic during or after rainfall to see if water is present near the ridge vent line and inspecting for visible foam damage or shrinkage. At home, you can safely perform a simple check by looking for cracked or separated foam around the vent or signs of moisture inside the attic near the roof peak. Use a flashlight and a mirror if necessary, but avoid disturbing the foam extensively.
If you notice any damage or leak signs, calling a professional is the best course since repairs around SPF and roof vents require skill and special materials to maintain the roof’s waterproof and insulated qualities. When consulting a roofer, ask first how they plan to seal the ridge vent in a way that won’t interfere with attic airflow or the foam’s integrity, and inquire if the repair will be covered under any applicable manufacturer’s warranty. Additionally, clarify whether the solution involves adding or replacing structural features or just patching the foam. This helps you understand both the short-term fix and any potential implications for your roof’s long-term performance. Remember that ensuring proper ventilation and airtight sealing go hand-in-hand for lasting leak prevention.