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Ventilation for remodeled bathroom

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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.
    "When we build let us think we build forever. Let it not be for present delight nor for present use alone. Let it be such work that our descendants will thank us for, and let us think, as we lay stone upon stone, that a time is to come when these stones will be held sacred because our hands have touched them, and that men will say, as they look upon the labor and wrought substance of them, "See! This our fathers did for us."
    John Ruskin (1819 - 1900)

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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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