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Thread: Leaking Shower Drain

  1. #1
    DIY Junior Member
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    Default Leaking Shower Drain

    I found a leak in our first floor shower drain. When I cut the ceiling away to get a look at it, I found the previous owners presumably had the same problem and literally put a tray in the ceiling to catch the water before they sealed it back up. Classy.

    The leak occurs between the PVC drain and the brass drain fitting in the fiberglass unit.

    It's a real bear to get to from the underside - HVAC supply and return ducts, copper supply, and floor joists to name a few obstacles.

    With that in mind, any way to address this from the shower floor? We actually plan to replace the shower unit within a year or so, at which time the problem will be addressed for sure - but I'd like to do something now so guests can use the shower without a bucket hanging from the ceiling in the finished basement... Not classy.

    Some pictures attached. Thanks in advanced for any help.
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  2. #2

    Default

    There is a rubber gasket (under tub) you need to replace. When you remve the drain and start to put things together use 100% silacone (on top) between the tub base and drain. Let dry and remove exess.

  3. #3
    DIY Junior Member
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    Default

    Quote Originally Posted by Mead View Post
    There is a rubber gasket (under tub) you need to replace. When you remve the drain and start to put things together use 100% silacone (on top) between the tub base and drain. Let dry and remove exess.
    Thanks Mead. So here's the latest. I scraped out what seems like an old gasket around the top of the pvc, and underneath it - between the pvc and the brass - was a ton of fibrous material that was packed into that space. I dug as much as I could of it out of there (you can now see the void between pvc and brass), and am guessing I'd replace the packing with a good fill of silicone sealant.

    here's a pic of what I found - it was surprising, to say the least.

    again - I appreciate the response
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    Last edited by jonwarner4; 01-06-2009 at 07:13 PM. Reason: new info

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    The fibrous stuff looks like oakum (oiled hemp) and is typically used with a cast iron, leaded connection. The oakum is packed into the joint between the hub and the pipe tight, then lead poured on top.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5
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    Default replacement?

    Quote Originally Posted by jadnashua View Post
    The fibrous stuff looks like oakum (oiled hemp) and is typically used with a cast iron, leaded connection. The oakum is packed into the joint between the hub and the pipe tight, then lead poured on top.
    Any suggestions on what to replace that packing with?

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