Bathroom Fan Attic Insulation

The first step is to head to the attic.

Bathroom fan attic insulation.

Make sure vent pipe is insul wrapped. Mar 8th 2018 2 12 pm. Seal boot to existing vapour barrier. 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.

I think you need to go into attic regardless as the fan housing probavly has brackets attached to the attic joists. Or you rent a blower. Insulate the bathroom exhaust vent fan ducts. Before you rush to the attic or go the roof to check for any leaks make sure the exhaust fan duct is properly insulated and run the fan more frequently for a prolonged period.

Cut hole like an x where elec and vent pass through. Options for venting a bathroom exhaust fan include best to worst. Install a vapour barrier boot where your fan will go. Mount fan inside boot.

Seal holes around elec and vent with tuc tape and with accoustic sealant. 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. To avoid mistakes not running it at all consider installing switches with built in timers. If you see that your duct isn t insulated at all pick up duct insulation at the home center.

While insulating you can make some mistakes. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. In some localities the building department may require the use of r 3 to r 8 fiberglass pipe insulation to control condensation and even when it isn t required it s a good idea to use it especially if the vent opening is likely to ice up during the winter. You may find that the insulation simply needs to be refastened.