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  1. darisler

    Bathtub overflow - is it a vent?

    Okay thanks makes sense. So I have a bit of a rough-in problem. Tub is on main drain goes to basement slab. Vent line and overflow are too close, only 3" apart. I have 8" ceiling joist to work with. I am next to. 2x6 "water wall" but I have to get the p-trap in and vented. There is about a 2'...
  2. darisler

    Bathtub overflow - is it a vent?

    In my "dewalt" plumbing guide book the drawing for a tub seems to imply the tub overflow is acting as a vent to protect the trap for the tub. (Tub drain connects to san-tee and overflow, and then to p-trap). At least, they are not showing the vent in their book. Do I then connect to another...
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