Cast Iron Drain LeaK

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  #1  
Old 12-08-12, 09:02 AM
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Cast Iron Drain LeaK

I have a leaking 2" cast iron sink drain pipe which is leaking at a joint where 2 ells are connected.

Is there a product to use as a temporary fix which I could apply to the outside of the joint to stop the leak?

I plan to replace the pipes in the spring.

Thanks in advance for any suggestions.
 
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Old 12-08-12, 09:20 AM
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I would get the quick setting JB weld. It may hold so good you may not replace in the spring....LOL

J-B KwikWeld | Quick-Setting Steel Reinforced Epoxy
 
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Old 12-29-12, 06:47 AM
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Leak

The JB Weld did not hold. I have temporarily plugged the leak with plumbers putty. Below are two photos of the drain pipe. I apologize for the messed up pipe arrangement. Cleaning this up is part of the planned project. See comments after each photo:



The above is a close-up. The leak is at the joint between the two ells. My plan is to remove the lower ell and the remaining cast iron below it and replace with plastic. Below is another photo from farther back:



The coupling at the bottom is attached to plastic which goes through the wall to the outside. I want to use a second coupling to attach plastic to the upper ell and run plastic to the lower coupling. What are your comments? Which Fernco coupling do I need?
 
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Old 12-29-12, 07:32 AM
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Where does that other ell go? Up in the wall? What wall is that?

I would cut the wall open and snap the line there if you could.

Get rid of that coupling and use only a no hub / mission couplings. Has the band and one side fits cast and one side fits pvc. The OD are different.

Home stores do not typicality carry the that big. May need plumbing supply.

Mission Rubber Products.html
 
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Old 12-29-12, 08:41 AM
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Drain

The drain is for the kitchen sink. It goes up through the sub-floor into the wall under the kitchen window. The vent pipe comes down beside the window and over (I guess). Replacing the entire cast drain system would require removing the cabinets and opening the wall. I was hoping to attach new piping to the upper ell in the first photo and leave in place the section of piping inside the wall.

The pipes are 2 in.
 
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Old 12-29-12, 08:48 AM
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Leaking from the lead?

If that ell is same diameter or pipe then cut here. I would use a sawsall and cut as straight as possible. You may go through several blades, but it can be done. I have done it numerous times in close quarters.
 
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Old 12-29-12, 01:18 PM
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Drain

Thanks for the advice. I would never have thought of that.
 
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Old 01-07-13, 12:34 PM
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Repair Done

Finished the job a few minutes ago. Used 2 saw blades(18 tpi). Found the Fernco couplings at HD. Thanks again for the advice. The leak was due to thin pipe where the pipe went into the hub. Rusted through.
 
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Old 01-07-13, 01:12 PM
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Good job.... Glad it worked out.
 
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