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Anatomy

Flashing

Metal sheeting that seals where chimney meets roof.

All glossary terms

What is Flashing?

Where roof meets chimney, two layers make the weather seal: step flashing tucked beneath the shingles and counter-flashing let into the mortar joints above. Caulk-only patches tend to fail within 2 years; done right, the job means grinding fresh reglets into the brick.

Related terms:CricketCounter-Flashing

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