I have had major problems with my bathroom sink drain in a second story bathroom for years. About 3 years ago, we tried to snake the drain and the snake broke leaving it stuck in the cast iron drain pipe making the sink not drain .

The sink drain goes from the ptrap into the wall and runs at a slight angle about 12 feet through the holes drilled in the studs before it reaches the vent pipe / darin. I am wanting to switch it over to new pvc. I plan on having to make many cuts to remove the existing pipe in small sections to be able to remove the existing cast iron.

My problem is how to run 12' of new PVC through those existing holes in the studs. I don't think that cutting notches the rest of the way out of the studs is a good idea. I don't really thing that installing 14" pieces with 10 couplers is a good idea either. There is no way with the location of the sink to be able to run the full length pipe but I'm hoping I don't have to run it in tiny sections.

I was wondering if anyone had any ideas on this subject to be able to make the project a little bit easier.

Thanks for your help,

Josh

I was

Remove first stud with hole in it. This will give you 30'' to work pipe into. Should be enough flex to snake it through. Then reinstall stud.

Chuck

Have you removed the drywall to see this pipe? Doesn't make sense to go 12" to stack. The drain would have to be vented before that. Perhaps the horizontal pipe is the vent pipe. Somebody got the 12' cast iron pipe in there. While PVC will flex a little, cast won't. Perhaps the studs are already notched.

How is a cast-iron drain line connected to the sanitary tee? Is it a lead and okum joint or did they use No-Hub bands? I would rather see you notch the studs then you short pieces of PVC. Let me know. Good luck, Tom