What Is Roof Flashing, and Why Does It Fail Around Chimneys?
Roof flashing is one of the most critical weatherproofing components on any residential or commercial building. It is a thin, weather-resistant material—commonly galvanized steel, aluminum, or copper—installed at joints, angles, and intersections to direct water away from vulnerable transitions. Among all the penetration points across a roofline, none are as susceptible to water infiltration as the boundary between your roof surface and your chimney. For property owners