Recently my kitchen sink started backing up into an old pipe. It was cut
and sealed outside at the main drainage pipe. Now the next joint up is
leaking. Do I need to replace the whole pipe or seal it? Could a blockage
in the drainage line be causing it to back up? I am worried because this
pipe is located against the wall of my house and runs thru my utility room
with the hot water heater and circuit breakers.
I suggest you find what was and is causing the blockage and back up.
You don't fix a leak caused by a backup by sealing the leak, at least you
don't do it if you want it properly fixed. I may have it wrong, but it
sounds like you are trying to fix the symptom not the cause. Sort of like
sitting on a tack, and taking a pain pill rather than standing up.
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