Bathroom Fan Attic Insulation

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.

Bathroom fan attic insulation.

Make sure vent pipe is insul wrapped. Through the roof or an exterior gable wall. 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. The first step is to head to the attic.

Mount fan inside boot. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. 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.

Cut hole like an x where elec and vent pass through. If you see that your duct isn t insulated at all pick up duct insulation at the home center. Mar 8th 2018 2 12 pm. While insulating you can make some mistakes.

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. Options for venting a bathroom exhaust fan include best to worst. To avoid mistakes not running it at all consider installing switches with built in timers. You may find that the insulation simply needs to be refastened.

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. Insulate the bathroom exhaust vent fan ducts. Install a vapour barrier boot where your fan will go. 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.