My contractor hit my sewer line when digging a footing and repaired it using Fernco™ couplers.
Will those survive when encased in concrete or will the concrete eat away at the rubber and/or steel bands holding them on?
I don't have a good feeling about it, so I'm off to buy a couple of slip-joint PVC connectors, but I'm not sure if I should use them or not.
The answer will depend on the type of Fernco.
Some are designed to be buried and have stainless clamps and are approved by most local code.
Once dry the concrete makes it's own shield around the coupling and it is unlikely to crush or be disturbed. Additionallly, since this pipe is not under pressure there is little likelihood of a leak.
Will the concrete degrade the rubber? Not likely in decades, if not after a century.
The definitive answer would be from the local building dept. dependent on their approval.
