Failed Cast iron drain lines

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by nabrcw, Sep 6, 2009.

  1. nabrcw

    nabrcw New Member

    Aug 23, 2008
    I need general guidance on replacing my entire waste drain system. House is ~40 yrs old, slab on sand in S. Florida, average size 3bed 2 bath. The drain lines under the house appear to be cast iron. We had a break under the kitchen cut out and patched. At that time I noted that there wasn't a really good slope, now the bathroom drain is not working. I'm convinced I will have to bite the bullet and replace all of the drain pipes under the house. I will hire a professional but I really need to be knowledgeable on the subject to prevent typical short cuts.
    Will I have to cut troughs across my entire house?
    Is there a way to replace or add an alternate set up drain lines from outside the house?
    What kind of cost do you think this will be $5k, $10k???
  2. Cass

    Cass Plumber

    Nov 12, 2005
    Different areas of the country have different rates and there is no way without us being there to see what is involved to price should get a minimum of 3 estimates....
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    Show the job to five plumbers and you might get five different opinion as to how to do the job, and that would mean five entirely different prices. I cannot believe you have a cast iron system that has completely failed in that short a time. But only a video camera inspection, with a recorded tape or DVD, can answer that question. Without that inspection, which will also tell you where the pipes are located under the floor, there is no way to even tell you what will have to be done, or if there are alternate ways to do it.
  5. Master Plumber Mark

    Master Plumber Mark Master Plumber

    Feb 6, 2005
    Sensitivity trainer.. plumber of mens souls
    indianapolis indiana - land of the free, home of
    do what HJ stated ....

    I doubt that the whole system is rotted away either...

    do the camera thing and be sure , thier is no reason to
    change any of that unless you are %100 sure it is bad..
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