Attic Insulation Over Bathroom Fan

The first step is to head to the attic.

Attic insulation over bathroom fan.

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. You may find that the insulation simply needs to be refastened. But some consider it somewhat flimsy and may not support the weight of insulation over any distance.

Insulate the bathroom exhaust vent fan ducts. There are several options available for the ducting like flexible aluminum ducting. How well the insulation around the bath fan will work depends on the ducting greatly. 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. If you see that your duct isn t insulated at all pick up duct insulation at the home center. Caulk or spray foam can be used to seal the box to the ceiling drywall and to seal around the exhaust pipe. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

I had insulation from 1952 that was less than an inch thick. The seams can be taped with housewrap tape. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. I want to make sure that is ok.

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. When i got to my exhaust fan for my bathroom i added that last year i went right over the fan and covered it. Another approach could be an insulated hvac duct approach.