Drain Vent placement

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by dasadler, Jun 14, 2018.

  1. dasadler

    dasadler New Member

    Apr 9, 2015
    Hello all, new member here. I live in Southern California.

    We are going to have a bathroom moved from one interior part of the house to another part which will be against an outside wall.

    It was suggested that sink, shower, and toilet drains can be vented out the wall instead of through the roof.

    Does that sound right? If not, why not? (so I can make a convincing case)

    Thanks you,
  2. Sylvan

    Sylvan In the Trades

    Sep 23, 2004
    plumbing contractor
    New York
    Only vent I know of through a wall is the fresh air inlet and the vent terminal is through the roof
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  4. asktom

    asktom Member

    Nov 9, 2009
    Victor, MT
    Through the roof, that is the code. Actually, it could be run through the wall (at a 45 angle or 42" above the floor if a 90 is used), but you would need to then turn it up and run above the edge of the roof.
  5. fullysprinklered

    fullysprinklered In the Trades

    Jun 15, 2014
    self-employed plumber-electrician doing residentia
    As long as it's not being inspected, you can vent it up your mother in law's britches leg.

    MASTERPLUMB777 In the Trades

    Aug 6, 2007
    Retired Master Plumber
    Unless you live in the Boonies it is against code people do not want to look at those nesty old pipes,
    I haven't seen any in So. CA. since back in the old days of the 70's on really old houses that were never built with in door plumbing,
    this is a building code Issue
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