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Thread: Can I use "in wall vent" instead of thru roof for shower?

  1. #1

    Default Can I use "in wall vent" instead of thru roof for shower?

    I've used an in-wall type vent (air valve) for a toilet before instead of venting through the roof. Would it work for a shower?

    Thanks in advance for your advice.

  2. #2
    Plumber Cass's Avatar
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    Nov 2005
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    Ohio
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    5,984

    Default

    There is no "in wall" vent that I know of. There is a vent called an AAV (air admitance valve) that can be used but yuo can not put it in a wall.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Cave Creek, Arizona
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    25,655

    Default vent

    And at least one vent pipe has to be extended through the roof. You cannot use all AAV's.

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