Exposed fastener metal roofing involves screws or nails that remain visible on the roof surface rather than being concealed beneath panels or trim. Over time, these exposed fasteners can cause leaks because the rubber washers or sealants around them degrade, crack, or become compressed, allowing water to seep in. Ridge vents are designed to ventilate attic air by running along the roof's peak, and they can leak when the flashing or the vents themselves are improperly installed or become damaged. Common causes of leaks include corrosion around fasteners, loose screws, or poor sealing around the ridge vent edges. A simple diagnostic step is to check for water stains or drips inside the attic along the roof’s peak after heavy rain or snowmelt. From the outside, you can inspect for loose, missing, or rusted screws and visible damage or gaps around the ridge vent’s edges. Be cautious not to walk on the roof unless you’re comfortable and it's safe, preferably conducting inspections from a ladder or binoculars.
For homeowners comfortable with basic maintenance, tightening loose screws with a drill and replacing damaged washers on exposed fasteners can sometimes halt minor leaks. Applying high-quality roofing silicone or sealant around ridge vent seams might help temporarily stop water intrusion. However, if the roof is older or the leakage is significant, it’s wise to call a professional roofer. Ask your contractor how they will ensure the screw fasteners are properly sealed and what type of fastener and washer they recommend for maximum longevity. Also, inquire how they will verify ridge vent flashing integrity and whether they provide a warranty covering future leaks related to installation or material defects. Paying attention to these details upfront can make repairs more durable and help protect your roof investment.