Attic Insulation Over Bathroom Fan

There are several options available for the ducting like flexible aluminum ducting.

Attic insulation over bathroom fan.

Options for venting a bathroom exhaust fan include best to worst. In un conditioned space such as an attic where otherwise your fan duct will be exposed to cold attic air in winter use insulated solid metal ducting or insulated flex duct. Bathroom exhaust fans perform an important function by removing excess moisture from your home. When i got to my exhaust fan for my bathroom i added that last year i went right over the fan and covered it.

If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. Insulate the bathroom exhaust vent fan ducts. The box can be made from rigid foam. Work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just put in.

The seams can be taped with housewrap tape. The first step is to head to the attic. I want to make sure that is ok. How well the insulation around the bath fan will work depends on the ducting greatly.

I just added r19 unfaced insulation to my attic. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing. Another approach could be an insulated hvac duct approach. If you see that your duct isn t insulated at all pick up duct insulation at the home center.

When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form. The exhaust fan housing should be covered with an insulated airtight box. I had insulation from 1952 that was less than an inch thick.