Toilet vent question

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by ragtop68rs, Dec 31, 2013.

  1. ragtop68rs

    ragtop68rs New Member

    Messages:
    6
    Location:
    Grand Rapids,Mi.
    Guys, what would a toilet do if it had no vent line? I just moved a toilet and ran a new 3" drain but didn't put in vent. It seems to work fine but what problems will I see? I have not tiled the floor yet so I will be tearing it back up to add a vent. I'm going to have to run it through a couple of 2 x 10 joist. Is that ok? Thanks, John
  2. wjcandee

    wjcandee Wise One

    Messages:
    1,852
    Location:
    New York, NY
    Absence of a vent isn't going to make the toilet function less well. However, it will cause the toilet to siphon the traps in associated drains, raising the opportunity for sewer gas to seep into the premises. A good plumbing primer is here: http://www.co.lincoln.or.us/planning/plumbing/apps/plumbingguide.pdf and here: http://www.klickitatcounty.org/building/FilesHTML/pdf/plmbghandout0411.pdf
  3. ragtop68rs

    ragtop68rs New Member

    Messages:
    6
    Location:
    Grand Rapids,Mi.
    Thanks, that helps.
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