2nd Floor Stack Vent Re-Route

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by CPD, Jan 12, 2019.

  1. CPD

    CPD New Member

    Joined:
    Jan 12, 2019
    Location:
    Montana
    Hello,

    I am a first time poster to the site. I am working on a 2nd floor bathroom remodel and have a question pertaining to the re-routing of the main stack vent. Currently the stack has two, 45-degree fittings in order to navigate the vent into the existing wall (left picture). My (current) plan is to shift this wall approximately 12 inches which would require offsetting the stack vent (picture on the right) using 90-degree bends and a short horizontal run. Am I allowed to have a horizontal run in the stack vent at this level? I appreciate the help!
     

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  2. Stuff

    Stuff Active Member

    Joined:
    Mar 7, 2013
    Location:
    Pennsylvania
    Welcome but no, you can't go horizontal there. Need to be above flood level of vented fixtures (toilet in this case). Also some don't want to see main stack horizontal. (45º counts as vertical)
     
    Last edited: Jan 12, 2019
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  4. CPD

    CPD New Member

    Joined:
    Jan 12, 2019
    Location:
    Montana
    Thanks for the reply Stuff. I ended up going down the stack and putting in 45s for the offset.
     
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