Bathroom Exhaust Vent Terminates In Attic

Your attic is an enclosed cold zone.

Bathroom exhaust vent terminates in attic.

Do not simply terminate a bath vent fan duct in an attic as shown in our photo above nor can you just dump the exhaust vent into a crawl space nor into a closed wall floor or ceiling cavity. 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. You should never exhaust the bathroom fan directly into the attic. Can i vent a bathroom fan into my attic.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. The exhaust vent must terminate outdoors. Example model ventilation codes. It seems like such an easy solution just leave a bathroom vent hose in an attic.

A vent fan evacuates warm and usually very humid air from your bathroom or kitchen you re most often venting steam from a shower or from boiling pots pans. Options for venting a bathroom exhaust fan include best to worst. Surprisingly bathroom fans are not required by some building codes. Exhaust air from toilet rooms and bathrooms shall not discharge into attic crawl space or other areas inside building.

That it is not blocked or restricted. Duct already wrapped in insulation at home centers. No you should not vent a bathroom fan directly into an attic however you can vent a bathroom fan through an attic while it terminates on the roof or gable end. That will take it from the bath exhaust fan to a discharge point.

Bathroom exhaust fans perform an important function by removing excess moisture from your home. So what you want to do is you want to install a duct a vent duct and you can use flex duct for this. No you cannot vent your bathroom exhaust fan into the attic. Although this isn t always possible in attic crawl spaces you should always insulate the duct to prevent condensation problems.

A lot of options. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. You can find 4 in. See bathroom vent duct termination for details about how to terminate the bath exhaust vent duct.

All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. The two most common locations for a bathroom vent to terminate is on top of the roof or through an exterior side wall. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Otherwise you re inviting a moisture mold rot insect problem in the building.