Silicone roof coatings are popular for their waterproofing abilities and UV resistance, but leaks around ridge vents can still occur despite their protective layer. These leaks often happen because ridge vents, which provide essential attic ventilation, create small gaps or seams where water can seep in if not sealed correctly. Over time, weather exposure can cause the silicone coating to shrink, crack, or peel, especially near the vent edges where there’s more movement and temperature fluctuation. A common cause of leakage is improper surface preparation before application—dirt, rust, or moisture can prevent a strong bond, leading to coating failure. Simple checks you can safely do involve looking closely at the ridge vent and silicone areas after rain or using a garden hose to simulate rain; look for any water infiltration inside the attic or visible cracks in the coating. Feel the edges to see if the silicone has become brittle or detached from the vent, but avoid aggressive probing to prevent damage.
If you suspect a leak or see signs like water stains in the attic near the ridge vent, it’s wise to call a roofer familiar with silicone coatings. Ask your contractor if they will perform a full surface cleaning and whether they'll use a compatible primer before reapplying the silicone to ensure proper adhesion. You might also inquire about their experience with ridge vent details and how they handle overlaps or flashing to prevent future leaks. Since improper fixes can void your warranty or cause more damage, make sure the roofer checks for any underlying damage to the vent or surrounding roofing materials before recoating. Proper attention to detail in the vent seams and careful application of the silicone can often resolve leaks without needing a full roof replacement.