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Thread: Sewer lining material?

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    DIY Junior Member quick72toy's Avatar
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    Default Sewer lining material?

    Couple of questions.
    is there a code on what sewer lining materials have to be?
    Is it acceptable to use PCV pipe as a liner, if it is pushed inside clay pipe ? If so, what are the downsides to this method vs a blown in epoxy liner?

    Thanks.

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    Most sewer lines are 4" PVC

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    DIY scratch-pad engineer leejosepho's Avatar
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    I once thought about trying to use some smaller PVC pipe as a liner, but "smaller" was the stopper there. Then I considered the epoxy liner, but that cost was too great in comparison to carefully digging down (with a trencher) to the top of the clay pipe and then removing it, cleaning the groove and laying new 4" PVC right where the clay had been. A licensed plumber who had replaced his shovel with a small excavator had told me that could not be done, then did not even wave when he drove by a few days later while I was closing things up.
    "Great minds discuss ideas, average minds discuss events and small minds discuss people." --Eleanor Roosevelt

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    DIY Junior Member quick72toy's Avatar
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    Thanks for the reply Terry.
    The issue was an old clay pipe sewer that had a tree root problem in it. I thought it was a 6" main line and they were going to blow in an epoxy liner. I saw them putting in PVC piping as a liner. it ended up that the main was actually 10" so the went with a 6" PVC pipe inside the 10"
    Bit of background to this is, it is a private mutual sewer line shared by four houses. The house on the end of the line has a tree on it, and it's roots were getting into the old clay hub joints, plugging up the line, A root cutter has been sent down the line a few times, but instead of having to do this over and over again, the best solution was to cut out the old Y where the one house fed into the main, (and was causing the root issue,) and shoot a liner in both directions from the cut, for added insurance. My concern was that it wasn't going to be an epoxy filled sock that actually bonded to the old clay pipe making it completely sealed.

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