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  • Ventilation for remodeled bathroom

    There is no ventilation in my bathroom now and I would like to put a fan in. There is no attic or crawl space in my house. Looking up at the ceiling, it is a layer of drywall, then insulation, then open space (6 inches) that allows air to pass through, and above that the underside of the roof. My concern with simply installing a fan is that it will let cold outside air in. Any ideas? Thx.

  • #2
    Re: Ventilation for remodeled bathroom

    fan should have a baffle like a dryer vent does to block cold air and some critters.
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    “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
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    • #3
      Re: Ventilation for remodeled bathroom

      Chad13-It sounds as though your house has either a flat roof or very low rise in the roofing. My first ? would be, how far would the exhaust fan be from any exterior wall of your house? This warm, moist air needs to vented outside of the house to prevent mold/mildew. I would be looking at installing a way of venting the fan to the soffitt of the house or out the roof via the appropriate venting. I have done many of these and it's not difficult. I do not use the plastic flex vent hose used on clothes dryers, I wish they would outlaw these anyway. I only use the expandable aluminum type. Thanks, David

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