0

I'm replacing a toilet's wax ring in my 1960 US home. With the toilet removed, I noticed ugly-looking bumps on the inside of the cast iron drain pipe:

enter image description here

Here's a closer, more tasty look:

enter image description here

Aside from any coprophobia, are these bumps a sign of a serious problem (e.g. corrosion)?

  • You could make the effort and polish them out with a dremel... – Solar Mike Dec 26 '19 at 23:01
  • Thanks, but I'm assuming the problem extends further than what I can see. – Daniel Griscom Dec 26 '19 at 23:22
  • I'm more concerned with the standing water in horizontal waste water pipe. Looks like it is close to 1/2 full. – Charles Dec 26 '19 at 23:24
  • @SolarMike, you can't polish a turd ... lol ... i just could not help myself – jsotola Dec 26 '19 at 23:57
  • @Charles It isn't half full, but it is standing water. As with the rest of my concerns, fixing it would mean replacing a substantial amount of very inaccessible pipe. So, time for the better part of valor... – Daniel Griscom Dec 27 '19 at 1:01
2

Yes, that is signs of corrosion and in another 100-150 years, that will result in leaks in that pipe...

| improve this answer | |
  • And it may last longer because sometimes the surface iron will corrode until a graphite flake is reached , then corrosion stops ( aka . graphitic corrosion ). – blacksmith37 Dec 26 '19 at 23:03

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.