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  1. #1
    Join Date
    Jan 2011

    Default Draft from bathroom vent fan

    I have a vent/fan in the masrer bath that travels 3 feet and exits through an outside wall.
    On the exterior there is a louver flap vent.....3 louvers that are blown open when the fan is on, then fall closed by gravity when the fan is off.
    I assume that there is also a draft preventer of some kind in the fan itself.
    On cold or windy days, the bathroom will be as much as 10 degrees cooler than the bedroom and I can feel air coming in through the vent.
    Is there anything I can do to seal the vent when the fan is not on???

    It is a 3 year old house so the fan unit is fairly new.

  2. #2
    Join Date
    Mar 2008
    nova scotia, canada

    Default Re: Draft from bathroom vent fan

    you might want to take the face plate off it and take a look inside, its possible something is jammed up inside it and causing it to not fully close other wise it might be a cheepo model which has worn out and the damper isnt properly working.
    fire up the saw and make some dust

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