Venting Attic Bathroom Fan

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Bathroom exhaust fan venting code summary section r303 3. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

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Bathroom Exhaust Fans Left To Discharge Into The Attic Will Cause Moisture And Mold Issues Always Vent The Bathroom Vent Bathroom Exhaust Bathroom Exhaust Fan

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The truth about attic bathroom venting.

Venting attic bathroom fan.

I would by lying if i told you that it will cause problems it may be totally fine. No you cannot vent the bathroom exhaust fan into the soffit vents. 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. If you vent the bathroom exhaust fan to close to the soffit vents which are vented plates under your homes outer edge and roof your home the air can be sucked right back into the attic from the soffit.

A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. Can you vent a bathroom exhaust fan into the soffit vents. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Bathrooms must have windows when this section is adopted by a community it essentially says that for venting purposes bathrooms must have windows that open. In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo.

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