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  1. #1
    Join Date
    Nov 2011
    Posts
    1

    Default roof vs side wall bathroom vent

    Hi:
    I'm having some work done on my house and am wondering if it's better to put the exhaust vent from a bathroom through the roof or the side wall of the house. I live in Mass., where the winters are pretty extreme and feel like a roof vent would not be a good idea because of snow. The bathroom vent is about between 1 and 2 feet from the exterior wall.
    Thanks in advance for the advice.
    Daniel

  2. #2
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,501

    Default Re: roof vs side wall bathroom vent

    If snow or ice can block the vent from working, then a side wall vent is in order. Just keep the birds out in the warmer months.

  3. #3
    Join Date
    Aug 2007
    Posts
    6,612

    Default Re: roof vs side wall bathroom vent

    Both have their issues in colder climates such as yours.

    Through the roof can be buried in snow or they can ice up and back-drain into the bathroom. Through the wall eliminates those issues, but can cause mold and moisture problems in the attic if the bathroom vent is near eave vents.

    With a few precautions, either method will suffice, though I'd probably go through the wall rather than the roof in your situation.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  4. #4
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: roof vs side wall bathroom vent

    Through the wall is the best in my opinion. I've seen too many issues with roof exhaust vents.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  5. #5
    Join Date
    Sep 2009
    Posts
    9

    Default Re: roof vs side wall bathroom vent

    I went through the side wall as I don't like screwing around with the roof. Plus my side wall was only 3.5 feet from the fan.

  6. #6
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,620

    Default Re: roof vs side wall bathroom vent

    The main things to consider is to make sure the sidewall vent dose not cause condensation to drop on your walkway, or the warm moist air is not fed back up through the sofit vents.

    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

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