Bathroom Exhaust Vent Terminates In Attic

So what you want to do is you want to install a duct a vent duct and you can use flex duct for this.

Bathroom exhaust vent terminates in attic.

That it is not blocked or restricted. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. Surprisingly bathroom fans are not required by some building codes. 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.

Can i vent a bathroom fan into my attic. Now where the discharge point is is going to be up to you. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. No you cannot vent your bathroom exhaust fan into the attic.

The two most common locations for a bathroom vent to terminate is on top of the roof or through an exterior side wall. 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. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

You can find 4 in. This point where the vent terminates and discharges the bathroom air should be checked for damage and to see that the air is actually exhausting properly. That will take it from the bath exhaust fan to a discharge point. Otherwise you re inviting a moisture mold rot insect problem in the building.

Example model ventilation codes. Options for venting a bathroom exhaust fan include best to worst. 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. 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.

Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. A lot of options. Your attic is an enclosed cold zone. The exhaust vent must terminate outdoors.

It has the same temperature as the outside which in winter across the northern us will be below freezing. Duct already wrapped in insulation at home centers. It seems like such an easy solution just leave a bathroom vent hose in an attic. You should never exhaust the bathroom fan directly into the attic.