I guess I do not understand what is weeping. Cast iron is not
past its prime in 50 years. Cast iron can have problems, usually
caused by chemical drain cleaners and mineral deposits. You or a
good plumber would need to decide what is going on with your cast
iron. It may need a small section replaced.

Both for repair and replacement, I think any plumber will
recommend pvc. It is faster, quicker, cheaper, and easier. Cast
iron is still used, especially in commercial and high end work.
It can be argued that it is quieter, but you will pay a premium
for its use.

(top posted for your convenience)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)




"fish" wrote in message
...
Hi everyone,

We own a rental property, built in 1950 so some of the systems
are
nearing the end of their life expectancy. For example, the
waste
stack in the basement is seeping a little bit, so it needs to be
replaced. My question is, what should it be replaced with, cast
iron
or plastic, and what should I expect to pay for this? How big
of a
hole needs to be cut into the basement floor?

Thanks,
Fish