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Thread: bathroom vent

  1. #1
    Join Date
    Feb 2008
    Posts
    9

    Default bathroom vent

    hi,

    i have two bathroom but only one has a vent. i would like to add vent to other bathroom but can i tap into other bathroom vent pipe?

  2. #2
    Join Date
    Jan 2009
    Location
    Needham, MA
    Posts
    559

    Default Re: bathroom vent

    yes you can, but you have to install a backflow preventer on both lines right before the junction where they meet. however, if your fans come with one (a back flow preventer/flap) built into it, right where the fan meets the vent pipe, which most usually do, then you're all set from that point on. think of it this way, the flap on the exterior of the house has to open to vent the air out, if there was no back flow preventer on either fan the air would get blown from one bathroom to the other because it would be taking the path of least resistance and therefore not have the power to open the flap on the exterior of the house.

  3. #3
    Join Date
    Feb 2008
    Posts
    9

    Default Re: bathroom vent

    Thanx..that is answer Ive been looking for...thanks again.

  4. #4
    Join Date
    Oct 2008
    Location
    New Paris, Ohio
    Posts
    3

    Unhappy Re: bathroom vent

    my house has two bathrooms and two vents. I have a problem that when we are outside and the wind is blowing we get a sewer gas smell on the deck. Not very pleasant.
    Would a back flow preventer/flap help with that?

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