theBigSee
DIY Member
My washing machine just overflowed the utility sink for the last time! I want to tear out the sink and have a 2" standpipe instead. The sink drain/trap is 1.5", goes into the wall with a cleanout right underneath it and a vent stack right above it. The house is built on a slab and all drains are cast iron (the vents all appear to be galvanized though). The cleanout looks like 2" but it's hard for me to tell for sure (do they make 1.5" cleanouts?).
Before I start tearing out drywall, can anyone tell me at what point the 1.5" usually transfers to 2"? I am not sure how to proceed. The new standpipe/trap will all be 2" ABS and connected by a Fernco coupling, but just not sure where it will connect so there's not a bottleneck.
Thanks
Before I start tearing out drywall, can anyone tell me at what point the 1.5" usually transfers to 2"? I am not sure how to proceed. The new standpipe/trap will all be 2" ABS and connected by a Fernco coupling, but just not sure where it will connect so there's not a bottleneck.
Thanks