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    Vertical cast iron joint leak

    Asked Nov 30, 2007, 06:54 AM 5 Answers
    I have a vertical cast iron toilet drain pipe and the joint appears to have a slow leak. I say this because there is water accumulation at the bottom of the joint as opposed to water coming from the top... so I don't think it has anything to do with the toilet seal. I saw some mention of recaulking the joint to reseal the joint but no mention of how to do this. As I understand it this involves using caulking irons to repack the lead. When I look at the bottom of the joint is see a rope-like material... is this what needs to be repacked? Alternatively, are there any other sealers I could try?

    safbiker

    Last edited by safbiker; Nov 30, 2007 at 08:24 AM.
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    plumberjames83's Avatar
    plumberjames83 Posts: 99, Reputation: 5
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    #2

    Nov 30, 2007, 06:33 PM
    Replace and rerough the whole thing with pvc I think that may be easeier
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    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #3

    Nov 30, 2007, 06:51 PM
    The rope that you see is possible Oakum, which is used to seal cast iron joints, molten lead is then poured into the joint over the Oakum and the lead is tamped down with the irons to hold it in place. To me it sounds like the joint may have been taken apart in the past or it never had lead in the first place. DO NOT try to pour molten lead in the joint now because the lead would cause steam in the joint and the lead will explode outward. I would do like was advised above and remove what is leaking and replace with PVC or use neoprene joint connectors, which ever is easier.
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    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #4

    Nov 30, 2007, 07:08 PM
    I would be tempted to dig out what I could and fill the joint with silicone or a fast setting epoxy. Get things clean and dry, and don't put anything down any of the drains above it until it has time to cure up.

    Best thing is to wait and see what Tom has to say.
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    speedball1's Avatar
    speedball1 Posts: 28,614, Reputation: 1911
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    #5

    Dec 1, 2007, 06:33 AM


    WHOA! Before you go through the expense and hassle of replacing the cast iron with Pvc for a simple repair there is a product called DripSeal-PJ-43 that's just made for your problem. Check it out at, Lead Substitute
    This is a cold lead repair that's made for cast iron joints. Good luck, Tom
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    dripseal's Avatar
    dripseal Posts: 1, Reputation: 1
    New Member
     
    #6

    Dec 22, 2008, 08:18 AM
    Quote Originally Posted by speedball1 View Post
    WHOA!! Before you go through the expense and hassle of replacing the cast iron with Pvc for a simple repair there is a product called DripSeal-PJ-43 that's just made for your problem. Check it out at, Lead Substitute
    This is a cold lead repair that's made for cast iron joints. Good luck, Tom
    Gentleman, Thanks for recommending our product DRIPSEAL-PJS-43 (Pipe Joint Sealant) which is recommended for sealing cast iron pipe joints as best and economical substitute of molten lead. Contact us for more detail or technical assistance at email id dripseal@dripseal.com. We welcome trade enquiry also.
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