On Jul 26, 2:33 pm, Bert Byfield wrote:
Does anyone know if something exists that can be used to repair a
leaky cast iron drain stack? Basically, what I have is a nearly
40 year old cast iron pipe that has formed various pin-sized holes

Out with the bad pipe, in with the PVC of about the same diameter and
length, connect with rubber pipe-clamps that slide over the PVC and
iron junction, tighten with a screwdriver, done.

if you leave cast iron above the pvc it needs to be supported somehow
BEFORE cutting...

nate