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    curtis1862's Avatar
    curtis1862 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 12, 2015, 08:26 PM
    Tap into a 4 inch vertical cast iron sewer
    I need to tap into a vertical cast iron sewer to run a new wash machine drain. The old one is super slow and just won't clean out. I would rather not cut into the concrete basement
    Floor.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Jun 12, 2015, 08:31 PM
    I need to tap into a vertical cast iron sewer
    Not something you want to do if you can avoid it.

    The old one is super slow
    Have you run a snake through it?
    Does present washer stand pipe tie into stack above or below the floor?
    talaniman's Avatar
    talaniman Posts: 54,325, Reputation: 10855
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    #3

    Jun 13, 2015, 07:31 AM
    It's MUCH simpler to unclog your drain than tap into it. What have you tried so far? How far did you snake? Where is your cleanout? Any other slow drains?
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #4

    Jun 13, 2015, 12:55 PM
    I agree with advices above. Avoid cutting Cast Iron.

    But, with some effort, proper tools, skill and knowledge - it can be done. Assess your situation carefully. If you cannot clean your drain and / or it continues backing up even after cleaning - come back and we will guide you through cutting 4" Cast Iron stock and installing washing machine inlet.

    Milo
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