Bathroom Exhaust Vent Terminates In Attic

All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans.

Bathroom exhaust vent terminates in attic.

A lot of options. Your attic is an enclosed cold zone. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Now where the discharge point is is going to be up to you.

Can i vent a bathroom fan into my attic. The exhaust vent must terminate outdoors. That it is not blocked or restricted. 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.

Surprisingly bathroom fans are not required by some building codes. That will take it from the bath exhaust fan to a discharge point. Options for venting a bathroom exhaust fan include best to worst. Otherwise you re inviting a moisture mold rot insect problem in the building.

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. Duct already wrapped in insulation at home centers. Although this isn t always possible in attic crawl spaces you should always insulate the duct to prevent condensation problems. So what you want to do is you want to install a duct a vent duct and you can use flex duct for this.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. 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. 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. It seems like such an easy solution just leave a bathroom vent hose in an attic.

You can find 4 in. Example model ventilation codes. The two most common locations for a bathroom vent to terminate is on top of the roof or through an exterior side wall. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside.

Bathroom exhaust fans perform an important function by removing excess moisture from your home. Exhaust air from toilet rooms and bathrooms shall not discharge into attic crawl space or other areas inside building. It has the same temperature as the outside which in winter across the northern us will be below freezing. See bathroom vent duct termination for details about how to terminate the bath exhaust vent duct.