A green roof is a roofing system covered with vegetation, which provides insulation and helps manage water runoff. Ridge vents are installed along the peak of a roof to allow hot, moist air to escape, preventing heat buildup and moisture issues inside the attic. Leaks around these areas can occur when the waterproof membrane beneath the green roof is damaged or improperly installed, or when ridge vent flashing fails to seal correctly. Excess moisture can seep through these flaws, causing water stains, mold, or even structural damage over time. Simple checks you can do at home include looking for soft spots or discoloration on ceiling drywall below the roof ridge, inspecting the ridge vent for visible gaps or cracked flashing, and after rain, noting any dampness or dripping inside the attic near those zones. Take care while inspecting to avoid walking on the green roof if you're not experienced, as this could damage the plants or membrane.
If you see signs of leaks, contacting a roofer is wise to avoid more serious damage. When you call, ask if they are experienced with green roofs and ridge vents specifically, because these require specialized knowledge about waterproof membranes and ventilation. It’s important to confirm that any repair work will maintain your roof’s warranty—ask how they plan to fix the leak while preserving the integrity of the membrane and vent flashing. A good roofer will inspect both the waterproof layers beneath the vegetation and the ridge vent installation, recommending whether repairs or partial replacement of flashing are needed. Early professional help can save money by catching problems before water causes rot or mold in the roof structure.