ANSWERS: 1
  • <h4 class="dechead">On One Hand: Removing Moisture

    Bathroom fans are necessary for removing the moist air from the room to prevent mildew and structural damage caused by damp lumber and bathroom building materials. Many area housing codes require either a window or electric fan in a bathroom to remove moisture and provide fresh air to the room.

    On the Other: Skipping Installation

    A small bathroom in the basement without a shower may not necessarily need a fan if adequate circulation is provided to the room through nearby windows, a free-standing fan in the doorway and if the door is kept open.

    Bottom Line

    It's a good idea to install an externally-venting bathroom exhaust fan when renovating or building a bathroom. Check local codes to ensure that the bathroom meets standards, as damage caused by moist air trapped in the room may not be covered by home insurance policies.

    Source:

    San Jose Building Codes

    Ask the Builder: Bathroom Fan Ventilation

    MN Dept. of Health: Mold in Rental Housing

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