TL;DR
Dormer flashing is the system of overlapping metals where a dormer meets the main roof: step flashing woven shingle-by-shingle up both sidewalls, an apron across the front, and counterflashing or siding lapping over it all. Each piece sheds water onto the one below it, and the corners where sidewall meets front are the acknowledged hard part, often needing soldered or field-bent details.
What it means
Dormer flashing is the system of overlapping metals where a dormer meets the main roof: step flashing woven shingle-by-shingle up both sidewalls, an apron across the front, and counterflashing or siding lapping over it all. Each piece sheds water onto the one below it, and the corners where sidewall meets front are the acknowledged hard part, often needing soldered or field-bent details. Reusing fatigued step flashing during a reroof, or smearing the junction with roofing cement instead of metal, is the shortcut behind many of the ceiling stains that appear below dormers a few winters later.
Where it sits in the glossary
Dormer flashing is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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