I'm currently doing a bathroom remodel on a 1960s home. The horizontal cast iron drains in the crawlspace were replaced a while back with PVC. The plumbing stack transitions from PVC in the crawlspace to cast iron which exits the roof.
Just above where the plumbing stack transitions from PVC in the crawlspace to cast iron, there are two horizontal fittings for two sink drains. I have attached a couple of photos below.
I was originally planning on sweating copper slip joint fittings to the ends of the 1.25" copper drain pipes in order to connect the new sinks. But a local plumber that I've talked to says that the better plan - since the walls are open - is to replace the 3-foot lower section of the cast iron stack and the sink drain fittings with PVC.
What are your opinions on the plumber's plan? It sounds a bit more complicated and laborious to me, but it also sounds like a good idea to get rid of the lower section of cast iron drain pipe.
Thanks for reading!
Just above where the plumbing stack transitions from PVC in the crawlspace to cast iron, there are two horizontal fittings for two sink drains. I have attached a couple of photos below.
I was originally planning on sweating copper slip joint fittings to the ends of the 1.25" copper drain pipes in order to connect the new sinks. But a local plumber that I've talked to says that the better plan - since the walls are open - is to replace the 3-foot lower section of the cast iron stack and the sink drain fittings with PVC.
What are your opinions on the plumber's plan? It sounds a bit more complicated and laborious to me, but it also sounds like a good idea to get rid of the lower section of cast iron drain pipe.
Thanks for reading!