RoddyPiper
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I replaced a rust clogged vent and drain pipe with ABS. Rather than patch the old plaster wall which I originally planned to do, I put 1/2 new drywall over it. Well, now my nicely cemented trap fitting sits partially inside the new drywall. Can these be extended with a threaded fitting, and if so, would this be any code violation? I live in PA. I'd sure hate to rip the drywall off after all the trouble I went to. One to learn on, I guess.