Maybe 50 years ago, the landlord hired a legit plumbing company to patch a leaking sewer pipe from the apartment above. The plumber somewhat cleaned off the cast iron pipe, then made a patch from a dark gray fibrous sticky waxy material, and placed the patch over the hole. He then wrapped the pipe and patch with several layers of vinyl tape.
Anybody know what the material was or where to find it? Local plumbing stores have no idea what it is.
Anybody know what the material was or where to find it? Local plumbing stores have no idea what it is.