It is much more likely that the streaking is due to condensation rather than
leakage from within the pipe. Another possibility is a joint leak or wax
ring leak somewhere up high that is simply running down the outside of the
pipe. I think it is extremely unlikely that your cast iron stack has become
porous. I really don't think it is even possible.
Don Young
"fish" wrote in message
...
The waste pipe itself is weeping moisture. its in the basement, and
from the ceiling to the floor there are weeps and solidified weeps
that are all up and down the pipe.

Can the whole waste line pipe in the whole home be replaced? Or
should you only replace what is exposed in the basement?

Fish


On Sun, 20 Nov 2005 11:40:36 -0600, "DanG" wrote:

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