TL;DR
Jamb flashing is the self-adhered membrane or formed metal applied up the vertical sides of a window or door rough opening, lapped over the sill flashing below and under the head flashing above so any water tracking down the jambs drains out over the weather barrier. The shingle-style sequence matters more than the product: pieces installed out of order route water behind the housewrap and into the framing.
What it means
Jamb flashing is the self-adhered membrane or formed metal applied up the vertical sides of a window or door rough opening, lapped over the sill flashing below and under the head flashing above so any water tracking down the jambs drains out over the weather barrier. The shingle-style sequence matters more than the product: pieces installed out of order route water behind the housewrap and into the framing. Flexible flashing tapes conforming to AAMA 711 dominate the application, pressed with a roller for full adhesion.
Where it sits in the glossary
Jamb 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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