The sewer line that leads from my kitchen stack has a leak. (We have an
odor and a slight amount of water between the basement slab and the
garage slab.) The stack goes under the basement slab. I'm wonder if
this is something I can repair. I have installed gas water heaters,
rebuilt my kitchen, rebuilt my bathroom which involved a good amount of
demolition, built a deck. If I had a guide of what to do and some help
from the forum I think that I could do it. From the kitchen I have 3"
(I think) copper coming down, which unions to 3" cast iron, which goes
under the floor.
stack, and follow the pipe until I found the leak. If I'm lucky it
might be close to the stack. Then, I'd have to cut out the bad section
and replace it with PVC. And, replace the concrete. I know this is a
Is there a DIY guide out there? Is it a foolish idea to attempt this
1. Would you break the concrete with a demoliton rotary hammer? A
2. How wide an area do you need to break up?
3. After you find the leak, how much further do you need to go?
4. What do you cut the pipe with?
5. What kind of coupler/union do you use to go from cast iron to
schedule 40? What kind of glue and primer does schedule 40 need. (I
have a good pluming supply house close.)
6. What kind of coupler/union do you use to go from copper to schedule
Yes, you could do it. See what books may be at the library.
has the couplings needed.
To join to the existing copper, use a rigid ProFlex series 3001 coupling.
Inspect the copper carefully as it has remarkably short life
in sanitary DWV service.
You can cut cast iron with a soil pipe cutter (ask at the supply house)
or with a Sawzall (tedious).
You could run into clay pipe under the slab too.
Any chance the run could be placed *above* the slab?
Thanks. The slab is in my basement, so I'm going to rip up the slab,
repair and put the concrete back.
Thanks for the fernco website. I can borrow a soil pipe cutter. I'll
check out the copper.
Speedy Jim wrote:
A slight leak to wet the ground takes a bit of water suggest as someone
else said you might have plugged line is it slow to clear the toilet
when flushed. If it is look to the possibility of roots in the line.
This is a job you can do but suggest you check out all possibles first.
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