Upflush exhaust question

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    • #277719
      Lorenzo Poletto

      Finishing my basement bathroom…had my builder stub out a 1 1/2″ vent pipe to the attic for my bathroom fan….Decided to install an upflush system that has a 3″ vent pipe…My question is can I tie both (the fan exhaust and this 3″ vent pipe) into this 1 1/2″ vent sleeve I had the builder install or does the upflow need it’s own sleeve?

    • #296974
      Retired plbg1

      First thing is you cant cut size of the toilet vent down, second you would have a bypass and sewer gas would be sucked into buiding, you cant connect a Plumbing vent into a local vent. Run a new 3″ vent through the roof before builder gets down. Its against our code.

      Art retired plbg

    • #296975

      tysm for your response….I think the next step will be running the 3″ exhaust strait out the wall above ground level like a dryer vent…house is finished upstairs…figure this will be the easiest thing to do

    • #296976

      Not sure about venting it horizontally, that’s not code here but may be there for a simple fan vent. But for range hood vents, etc, they need to be vented vertically through the roof.

      I would suggest you get somebody who is certified for venting. Just the fact you asked about venting a toilet through a 1.5″ sleeve is scary. And I would’nt terminate the bath fan vent in an attic unless you want alot of mold and mildew up there.

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