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Thread: How to fix shower p-trap?

  1. #1
    DIY Junior Member wmichsabre's Avatar
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    Apr 2013

    Default How to fix shower p-trap?

    So while I was putting the floor back over the top of the shower drain, I must have broken the bond between the vertical pipe and the p trap.

    Is there an easy fix or do I have to tear it all out and rebuild?

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    Last edited by wmichsabre; 04-12-2013 at 01:11 PM.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Sep 2004
    New England


    Rebuild for two reasons..one because it's leaking and the second because it's an S-trap. The vent MUST come off the trap arm before that turns down. IOW, the pipe coming out of the end of the p-trap must be straight with a vent coming off of it before the waste can turn down.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Test, Don't Guess! cacher_chick's Avatar
    Join Date
    Jan 2008
    Land of Cheese


    Jad is correct, what you have there is very much wrong. The trap must be vented by a vertical riser within the max distance specified by your code. The pitch of the trap arm cannot exceed 2% between the trap and it's vent.

  4. #4
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Cave Creek, Arizona


    You CANNOT break the "bond between the riser and the P trap" unless it was a very poor joint in the first place, in which case it, and any others done the same way should be replaced. And, replaced with the proper slope and fittings.
    Licensed residential and commercial plumber

  5. #5
    DIY Senior Member Hammerlane's Avatar
    Join Date
    Oct 2011


    Can you provide a photo of what the plumbing looks like a little further downstream??
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