I have a broken cast iron flange attached to a lead drain, which then attaches to cast iron.
I had a plumber come out to give me an estimate on knocking off the flange and leading a new one. He suggested cutting the lead pipe in half, using a Fernco coupling, and finishing off the drain and flange with PVC.
After reading a bit here, I see that it's not a good idea to attache a Fernco coupling to lead (the lead will compress and the connection will leak).
I've also read, the lead is acctually attached to a brass ferrule which is inserted into the cast iron hub.
So, armed with this knowledge, I suppose I have three choices:
A) have a plumber remove the lead and brass from the hub, and lead on a new cast iron drain and flange (This plumber wanted to use a plastic lead instead of pouring molten lead)
B) Remove the lead drain, keeping the brass ferrule in the CI hub, and use a Fernco coupling to switch to 3" PVC for the drain and flange. (I guess a 3" Fernco coupling will attach properly to the brass ferrule ??? ) (and what's the best way to remove all of the lead from the brass?)
C) Remove the lead drain and the brass ferrule; use a 4"->3" donut inside the CI hub to switch to PVC.
Now, this is in an 80 year old house (although the pipes appear to be in great shape), and the bathroom is on the 2nd floor.
What would you do if this were your house?