The answer to 'why is my drip edge leaking' is that a leaking drip edge is often caused by improper installation, damage, or deterioration over time. Drip edges are essential components that direct water away from the roof's edge and prevent it from seeping into the home's interior, so any issues with them need to be addressed promptly.
Some common causes of a leaking drip edge include nails or screws that have worked loose, gaps or cracks in the sealant, and corrosion or damage to the metal drip edge itself. If the drip edge was not installed correctly, with proper overlap and secure attachment to the roof, that can also lead to leaks. Over time, the sealant can dry out and crack, allowing water to get through.