Our home, which, was built in the 1940's, has a cast iron sewer pipe running from upstairs down into the basement where it begins to run on an angle along a basement wall until it enters the ground through the floor.
To date we have not have any issues, but we plan on finishing the the basement and are wondering if we should replace this pipe before we begin to frame our wall around it. How long does these pipes normally last? I would hate to finish the basement only to have problems start behind the walls. Should we only replace the sloped parts? I had read the a vertical cast iron pipe should last forever since there is no standing water in it.
You input would be appreciated. Thanks.