The Ultimate Guide to Chimney Flashing Repair in Cincinnati Chimney flashing is a vital part of your roof system. It’s the thin metal—usually aluminum, copper, or galvanized steel—installed where your chimney meets the roof. Its main purpose is to seal that joint and stop water from leaking into your home. Flashing acts as a protective barrier and directs rainwater away from this vulnerable area, helping it flow safely into your gutters and off the roof. Read the Guest Blog: https://www.zupyak.com/p/4537266/t/how-to-know-if-your-metal-roof-needs-repair-or-replacement