Rusty Boils on Cast Iron Pipe

Old 11-08-17, 03:03 PM
Kevbo's Avatar
Thread Starter
Join Date: Nov 2017
Location: United States
Posts: 2
Received 0 Votes on 0 Posts
Rusty Boils on Cast Iron Pipe

House ca. 1958

I noticed some rusty boils appearing on the outside of my cast iron pipe which is the main waste leaving the house. Now, I know relatively nothing about this stuff, and for all I know, it could have been there for some time, but I just now noticed it, and there was some rusty residue running down the pipe from the boils. I attached four pictures. I have been living in this house for just over four years.

I did some research and see some people say it's better when it's a vertical pipe and not to worry, while others are saying start stock piling money as this will be an issue in the future. These were from other websites and forums I have read, not about my own issue.

Any thoughts? Should I do anything myself, call a plumber to change it out, or just let it go until something potentially happens.....which is scary in of itself. Thank you!
Attached Images     
Old 11-08-17, 03:48 PM
Banned. Rule And/Or Policy Violation
Join Date: Sep 2017
Location: USA
Posts: 516
Received 0 Votes on 0 Posts$mdmain$

There are various wrap around products that should do the trick.
Old 11-08-17, 04:07 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,183
Received 77 Votes on 69 Posts
Careful wrapping with clamp products. The pipe is probably thin and you will cause further cracking/damage possibly..

IMO I would snap the line overhead. and remove it all to that black Y...

Then lead in an adapter to PVC and replace back to the snapped area with PVC and a no hub coupling..

Cost in NJ would be about 2300 if I were doing it...
Old 11-12-17, 04:52 PM
Kevbo's Avatar
Thread Starter
Join Date: Nov 2017
Location: United States
Posts: 2
Received 0 Votes on 0 Posts
Thank you. I'll do some more research into the clamps and start to get some estimates around my way.
Old 11-13-17, 09:49 AM
Forum Topic Moderator
Join Date: Sep 2005
Location: USA
Posts: 6,295
Received 318 Votes on 284 Posts
The good news is that you don't have to worry about a catastrophic failure. Keep an eye on it. It will get worse, but it may take months or years. It's highly unlikely that you'll go downstairs one day and it will be completely rusted/broken.

The bad news is of course that it will need to be replaced at some point. Though could last a few years if you want/need it to.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: