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Question DetailsAsked on 3/29/2018

cast iron pipe elbow for kitchen drain has a hole in it this elbow is in the basement inside not in wall but outr

elbow is not in the block but outside of it

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1 Answer


So - assuming fully exposed to work on. If this is a manufacturing defect or nail hole, without cracking of the elbow or serious corrosion, Plumber you choose might just recommend plugging it or putting an epoxy or rubber pipe wrap or clamp around it to repair - they commonly last about 20 years or so if the surface is properly cleaned first, and this should be a zero pressure line so not a big leak issue. Minimum service charge ($75-350, usually around $100-150 in most areas) should cover that - plus maybe $30-40 materials.

If the elbow is cracked or corroded (and the latter might mean you have more corroded pipe which should be replaced too - be sure to inspect the inside with him when he has it opened up) then sometimes minimum charge will take care of it, especially if he uses rubber no-hub couplings (same about 20 year life, and if it does start to leak probably not s serious as if it were a line serving toilets) to cut in a plastic drain pipe fitting. Otherwise, replacing cast iron elbow - might take a bit longer - another $50-100 in labor commonly. Materials cost more around $10-25 in that case.

In fact, if nail hole or factory defect (not thin around it and does not break away or enlarge noticeably if you put a nail in and wiggle it around) you might even try washing and wire brushing or sandpapering to clean surface and drying, and then using a two-part epoxy pipe plug repair kit for about $10-15. DON'T get the stuff on your hands - use plastic bag and/or a tool to mix and pole into the hole. Effective part will be what is in the hole (and don't push in enough that it will stick out inside and promote blockages), not what is on the outside of the pipe.

If the hole is in the leading in the joint, carefully gouge or drill out the leak area about 1/4-1/2" deep (into the lead, not the pipe) and then force (putty knife or stick) it down into the hole. In either case if using epoxy putty repair, follow instruction on how long to wait before use - typically 1/2-2 hours.

PC Plumbing, WaterSeal, JB Weld, Locktite are common names for the epoxy putty - is a one-use kit regardless of whether you use it all on the repair or not. Make repair neat so it is not flagged by inspector as an obvious DIY job come home resale time.

Answered 2 years ago by LCD

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