Auger an old cast iron stack

[MasterPlumbersKeymaster]

When installing a new ABS joint in my cast iron stack. I noticed that only 2 inches of the 4 inch stack diameter is clear of buildup throughout. I am wondering if using an auger would damage the cast iron pipe, seeing as the buildup has occured over 100 years, or if I can simply clear some of this out without worry. Thanks!

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» This message has been edited by DUNBAR on 16 June 2004

[DUNBARParticipant]

I would clear the drain out using hot water and a auger.

If you see spots on the outside of pipe that looks like it has leaked, you might be better off not augering.

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“Your best interest is secured by making the right decisions the first time.”

[Retired plbg1Participant]

Replace the soil pipe and then auger the rest of the pipe.

[Author]

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