Bathroom Vent Attic Condensation

Bath exhaust fans routed up through the roof.

Bathroom vent attic condensation.

This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. Bathroom exhaust fans perform an important function by removing excess moisture from your home. What this means is that in colder weather the vented air with moisture in the air will mix with the attic air causing condensation to form due to the warm air from the bathroom and it doesn t have to be freezing for this to occur however just cool enough fall below the. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

No you cannot vent your bathroom exhaust fan into the attic. Water droplets tend to form on windows mirrors walls and stools when warm moist air is cooled by. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Water stains on the ceiling around your bath fan may indicate a leak coming from the vent cap on your roof but condensation is the more likely culprit. 7 mistakes not to make in your bathroom remodel do let your. Bathroom condensation is a common problem in many homes.

When this is the case warm moist air from the bathroom can condense on the inside of the cold duct and can run back down into the bathroom. Sometimes particularly when a bathroom exhaust vent extends through an unheated section of your home the possibility of condensation buildup can occur. How to fix condensation in bathrooms. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.

And for proper bathroom ventilation your exhaust fan needs to vent outside not into the attic or another area of the house. The first step is to head to the attic. Options for venting a bathroom exhaust fan include best to worst. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.