As many of you may already know, wherever items penetrate the roof, leaks are likely to form. One of the most common types of roof penetration is the chimney.
If the carpenter used galvanized steel around the chimneys, they can begin to rust. This would create weaknesses for water to seep through, leading to leaks inside your home.
The best way to fix rusted flashing is to replace it. You can also just slide new flashing under the rusted flashing to create a waterproof barrier and stop leaks.
Flashing is a common problem when it comes to leaks, especially when they come loose or begin to rust. But they also create an easy fix!