If a roof leaks, it most likely leaks at which location?

• A. At the ridge
• B. At the valley
• C. On the eaves
• D. In the attic

Answer: (B)

Water on a roof tends to find its way through the seams where two roof planes meet: the valley. That intersection concentrates water from both sides and relies on flashing to seal a longer, more complex joint. If the flashing is damaged or not installed perfectly, even small gaps can let water seep in and travel along the valley, eventually showing up inside the attic. So, among roof locations, the valley is the most common entry point for leaks.

Ridge leaks are less frequent because water runs off the peak, and only a compromised ridge cap or flashing would cause a leak there. Eaves can leak too, but those are usually due to problems with edge flashing, gutters, or soffits rather than the main roof junctions. The attic is the interior space where you notice the leak, not where it originates on the roof surface.