Minimum vent, waste line size for 2nd floor Bathroom?
Posted by Cris on June 23, 19100 at 15:14:41:
I am redoing bath, looks like 4" cast Iron stack from basement up through roof on 2nd floor. Room has been completely gutted, Chimney removed. Q. The old stack was chased out around chimney, now that it's gone, I would like to redo the entire line with a smaller size that I can fit between the studs in the wall, can I do this? It would I guess require a pipe size small enough to fit within the wall which is less than 4".?

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