Bathroom Fan Attic Insulation

Install a vapour barrier boot where your fan will go.

Bathroom fan attic insulation. Seal boot to existing vapour barrier. Mar 8th 2018 2 12 pm. The first step is to head to the attic. 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.

You may find that the insulation simply needs to be refastened. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. Make sure vent pipe is insul wrapped. Seal holes around elec and vent with tuc tape and with accoustic sealant.

Or you rent a blower. I think you need to go into attic regardless as the fan housing probavly has brackets attached to the attic joists. You can buy a bags of cellulose from lowes fluff it up into a garbage bags and dump into attic after you are done on top of the area where you disturbed insulation. Through the roof or an exterior gable wall.

Insulate the bathroom exhaust vent fan ducts. To avoid mistakes not running it at all consider installing switches with built in timers. Options for venting a bathroom exhaust fan include best to worst. Condensation can be a problem in an uninsulated attic so the homeowners trades resource center recommends installing rigid pipe with a minimum slope of 1 8 inch per foot toward the vent outlet to keep water away from the fan.

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. While insulating you can make some mistakes. Cut hole like an x where elec and vent pass through.