Vents through roof

Discussion in 'UPC Plumbing Code Questions' started by Ernie Starnes, Feb 18, 2021.

  1. Ernie Starnes

    Ernie Starnes New Member

    Joined:
    Dec 28, 2019
    Location:
    Fruitvale, Texas
    I recently had to replace some of the rubber part of the roof jacks on some of the vents going through my roof. This is on a 12/12 pitch roof and the boot is really straining to make the 45 degree angle. It made me wonder why plumbing vents always run vertically through the roof. Why not run them perpendicular to the plane of the roof?

    Are there code requirements to have them vertical?
     
  2. breplum

    breplum Member

    Joined:
    Oct 2, 2004
    Occupation:
    Plumbing and heating contractor
    Location:
    San Francisco Bay Area
    Yes code does dictate but your thought is very smart.
    Also, you likely have standard roof jacks but they make (w/o the rubber collar) jacks for 12/12.
    So, you have the wrong flashing to start with. Sorry
     
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