TL;DR
A wet vent is a code-permitted arrangement in which one section of pipe serves simultaneously as the drain for one fixture and the vent for another, most often letting a single properly sized pipe vent an entire bathroom group of toilet, lavatory, tub, and shower. The configuration saves significant piping over venting each fixture individually, but it works only inside strict rules: the wet-vented section is upsized, fixture order and connections are constrained, and IPC 912 and UPC 908 differ enough that a layout legal under one fails under the other.
What it means
A wet vent is a code-permitted arrangement in which one section of pipe serves simultaneously as the drain for one fixture and the vent for another, most often letting a single properly sized pipe vent an entire bathroom group of toilet, lavatory, tub, and shower. The configuration saves significant piping over venting each fixture individually, but it works only inside strict rules: the wet-vented section is upsized, fixture order and connections are constrained, and IPC 912 and UPC 908 differ enough that a layout legal under one fails under the other.
Where it sits in the glossary
Wet vent 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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