water trickling around waste pipe

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by danielpschneider, Mar 18, 2014.

  1. danielpschneider

    danielpschneider New Member

    Feb 11, 2014
    Hi Everyone,

    I took out a concrete slab in a bathroom located in my basement. I then cut out a cast iron pipe and used a fernco to attach a new pvc 3inch drain pipe. I tried to get the fernco tight, but after pouring water through the pipe it appears as if a little water trickles out. Will this be a big deal once I cover the pipe over with dirt and then pour a new concrete slab? Anything I can put around the fernco seal to contain water?

  2. asktom

    asktom Member

    Nov 9, 2009
    Victor, MT
    No, you don't want to leave a leak under the slab. How about posting a picture of what you have? There may be a simple answer if we can see it.
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  4. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    I would measure the O.D. of the cast.
    Some of the old stuff is 3-1/8", which makes it a copper size. A copper to plastic coupling would be the correct one in that case.
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