Meplumbing
Member
Hi all,
I'm in the process of repairing a leaking 3" cast iron drain stack, this is in a six story building, and the leak occurred above the basement, where the pipe transitions to horizontal. All appeared ok until I turned the water back on, and water started flowing back from an under-the-slab section of pipe, which runs for about 20 feet before it drops to the basement.
It appears that the rotted section is only several feet deep (to be verified by camera), however, excavation is not my first option in this case, b/c this runs under an apartment, and will involve tunneling, and building support...
So to my question, assuming I'm correct about the depth of the problem, is there an acceptable DIY approach to lining the rotted section with pex or some other flexible material, and sealing the opening with a gasket / sealant, then continuing upstream connection with Fernco's etc.
(Just to avoid unnecessary dialogue, please note:
1. I'm aware of commercial under-the-slab lining solutions/companies, but I'm looking for a solution that I can do myself.
2. I'm also aware that pex is not used for dwv applications, but perhaps there is some sort of pex or other flexible material which is rated for dwv applications).
Thank you,
Isaac
I'm in the process of repairing a leaking 3" cast iron drain stack, this is in a six story building, and the leak occurred above the basement, where the pipe transitions to horizontal. All appeared ok until I turned the water back on, and water started flowing back from an under-the-slab section of pipe, which runs for about 20 feet before it drops to the basement.
It appears that the rotted section is only several feet deep (to be verified by camera), however, excavation is not my first option in this case, b/c this runs under an apartment, and will involve tunneling, and building support...
So to my question, assuming I'm correct about the depth of the problem, is there an acceptable DIY approach to lining the rotted section with pex or some other flexible material, and sealing the opening with a gasket / sealant, then continuing upstream connection with Fernco's etc.
(Just to avoid unnecessary dialogue, please note:
1. I'm aware of commercial under-the-slab lining solutions/companies, but I'm looking for a solution that I can do myself.
2. I'm also aware that pex is not used for dwv applications, but perhaps there is some sort of pex or other flexible material which is rated for dwv applications).
Thank you,
Isaac
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