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MarkE
12-29-2008, 03:06 PM
I'm in the middle of replacing a shower drain for a remodel. I've chipped away the concrete slab to expose the P trap and a good 8 inches or so of cast iron pipe. My question is 1) is it ok to cut the CI pipe right behind the trap or would it be better to replace the pipe all the way back to the vent stack 2)is there a good way to clean the CI pipe to ensure a good seal to the no hub coupler, it's been burried in the slab for 50 years and is a little worn, seems to be in good shape though.
Any help is gladly appreciated!:)