Bathroom Exhaust Fan Vented Into Attic

It s never okay to vent directly into the attic even if you re attic is vented.

Bathroom exhaust fan vented into attic. It may also violate a shingle warranty. Excessive moisture will cause condensation on roof members and insulation. It seems like such an easy solution just leave a bathroom vent hose in an attic. No you should not vent a bathroom fan directly into an attic.

Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Through the roof or an exterior gable wall. Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons.

However you can vent a bathroom fan through an attic while it terminates on the roof or gable end. 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. Most municipalities require extractor and exhaust fans to be vented to the outside of the building with an vent cap.

No you cannot vent your bathroom exhaust fan into the attic. This will cause mold and could leave your home unlivable.