jjlash
New Member
I have a 4 inch lead (malleable) waste pipe that comes up through the concrete floor in my basement that was installed for a future toilet when the house was built in 1986. It looks like it's made of lead or tin since it is very malleable. The pipe sticks up about 2 inches and goes down 9-10 inches to an elbow to the main drain. I'd like to find a way to extend this so that I can install a toliet on a 12 inch subfloor very short distance away. This would also allow me to put a deep sink in also and connect it to a possible proposed horizontal section of the extension via a sanitary tee. Any suggestions on how to connect PVC or other internally to the lead waste pipe in the floor and get a good seal? The internal ID on the lead pipe 3.75 inch so I'd have a 1/8 inch gap for any pipe put down inside. An older plummer told me there was nothing I could do and to tear out the subfloor and just put the toilet on the concrete....