Leak in 2nd floor toilet!

Discussion in 'Toilet Forum discussions' started by Grill Sergeant, Jul 4, 2012.

  1. Grill Sergeant

    Grill Sergeant New Member

    Jul 4, 2012

    I installed a new toilet in the 2nd floor master bath on October 2011. About 3 weeks ago (June 2012), I noticed a leak coming through the ceiling on the 1st floor directly under the toilet.

    My first thought was to replace the wax ring, so I tried that and the leak persisted. The toilet is up against a wall, and the drain pipe runs about 8 feet and drops down the opposite wall. When I turn the water off under at the water line below the tank, the leak stops. This means it can't be a leak in the line right? Otherwise it would still be leaking unless I shut the main off?

    At this point should I start thinking about ripping up the tile and sub-floor?

    Thanks for any help!

  2. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona
    At this point you should call a plumber and let him diagnose it BEFORE you go crazy and start tearing things apart. Unless water is leaking out of the tank, turning off the water should have NOTHING to do with stopping the leak, other than preventing you from flushing the toilet.
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  4. toolaholic

    toolaholic General Contractor Carpenter

    Jul 16, 2005
    Repairing and remodeling homes
    Marin Co. Ca.
    Leave the water on clean up floor and all porcelain meticulously. Now lay down newspaper on floor behind toilet and flush a lot. Newspaper shows a drop of water best. Toilets are not suppose to touch wall! My guess, the tank to toilet is leaking.
    I two think You need a plumber.
  5. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    Many installs require two wax rings. Unless the flange is above the finished flooring, you will need more then one wax ring.
    Sometimes the flange is on the first floor, and then the secondary flooring is cut around the flange. It may be 5/8" underlayment or it may be backer board and tile. If that is the case, one wax ring wont do the job.
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