How to flash a chimney with a metal roof the right way

Learning how to flash a chimney with a metal roof is one of those skills that separates the weekend warriors from the pros who actually sleep through a rainstorm without worrying. It's not that the process is incredibly complex, but it is incredibly precise. Unlike asphalt shingles, which are pretty forgiving and easy to layer, metal panels are rigid, they expand and contract with the temperature, and they don't exactly love being cut into odd shapes around a brick stack. If you don't get the flashing right, you aren't just looking at a minor drip; you're inviting a structural headache into your attic. ...

February 18, 2026 · 7 min · Mccue Elva