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 Cast iron drain pipe leak
Author: Anonymous User

We noticed a leak in the drain pipe about ten-twelve feet from the toilet in the crawlspace of our basement. Our house was built in 1928 and a lot of the plumbing is cast iron, including this drain pipe. It is in otherwise good condition. The leak is not horrid, just a steady drip. Is there any kind of patching compound that can be used to repair the pipe until we can replace it. The crawlspace is very small and we will have to enlarge it before we can get in there to saw and remove. Please help!

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 Re: Cast iron drain pipe leak
Author: westchester plumber

The piping should be replaced as you mentioned but until then, as a homeowner you can purchase an epoxy compound as a temp. repair. Epoxybond is a brand that comes in two tubes, mix together and apply to split/crack in C.I. piping.
It may not seal the leak but if it does it will stop that nasty toilet water from puddling up in your crawlspace until a permanent repair can be performed by a licensed plumber.
Good Luck. *westchester plumber*

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 Re: Cast iron drain pipe leak
Author: Wheelchair (IL)

I'm guessing that you are referring to a horizontal run rather than a vertical run. Does the leak appear to be in a joint or in the middle of the piping. A repair may be in order rather than a replacement.
Doing your homework before the licensed plumber arrives will mean the saving of time... and money.
Best Wishes

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 Re: Cast iron drain pipe leak
Author: hj (AZ)

What can they do ahead of time to make the job easier for a plumber, other than to excavate the crawl space, if that is acutally needed.

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 Re: Cast iron drain pipe leak
Author: Wheelchair (IL)

I wish that I could answer that question with a credible answer, but I can't as I haven't been to the job site. I don't know if the venting is occurring in a joint or in the middle of the cast iron. (it would be nice to know) I also don't know the measurements of the crawl space.
But I'm hoping that a 7 course dinner for the person who is doing the repairs, might make it easier on the homeowner.
I hope that we both find out the answer in later postings.

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 Re: Cast iron drain pipe leak
Author: Dunbar (KY)

Determine the size of piping, go and buy a rubber fernco of that same size.



Take a utility knife and cut a vertical cut in boot so that it will open up.

Then wrap around pipe, with the leak directly centered in the fernco.

Then slip bands back over their regular spots on each end of boot and tighten up.


This will buy you a great deal of time on this matter.

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 Re: Cast iron drain pipe leak
Author: HytechPlumber (LA)

Often the condition of the pipe may look fine on top but may be severly corroded on the bottom. Untill a section of pipe is cut out and replaced anything else will be a guess. If the leak is from a hub joint possibly the lead joint may need to be re-caulked. If the leak is on a straight run you can split the rubber on a fernco and install around pipe for a temp./ possibly long term fix. To actually see the leak location would help determine the proper fix. Sometimes cast iron pie will form a long split that may not be east to see. GOOD LUCK

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 Re: Cast iron drain pipe leak
Author: Anonymous User

The leak is on a horizontal section of pipe in the middle, not on a joint. Thanks so much everyone for your help!! I'll check back again and see if there is any more advice with the new info smiling smiley

(PS-I'd be willing to cook seven courses for any plumber who can fix my basement!)

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 Re: Cast iron drain pipe leak
Author: Anonymous User

I have put J.B.Weld to temp. patch a c.i. line untill I could replace the line.

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 Re: Cast iron drain pipe leak
Author: Anonymous User

I have multiple leakages on this same type of drainage, but I think mine are all from the joints. One is where the washing machine drain to. Two of them are from the shower place, tub and.

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