Bathroom Exhaust Fan Attic Venting

Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Bathroom exhaust fan attic venting.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Ventilation fans improve indoor air quality by venting moist air quickly outside which helps to control mold and mildew growth. Can you vent a bathroom exhaust fan into the soffit vents. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.

Broan nutone exhaust ventilation fans allow your home to exhale eliminating humidity odor and airborne particulates from your bathrooms closets mud room laundry work out space and more. To determine which size fan to buy for your bath multiply the room s square footage by 1 1. I would by lying if i told you that it will cause problems it may be totally fine. Bathroom vent fans are rated by how many cubic feet of air they can move in one minute known as the cfm rating.

The bathroom here is below an accessible attic so tom ran the exhaust duct across the attic and out a gable end. Another consideration to think about is the placement of your fan. In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. This involves running ductwork from the fan usually though an attic and out through the roof.

Each fan vents separately out the roof. 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. What is the bathroom exhaust fan venting code. Building code is a model code that each community can adopt and adapt according to its own needs.

Also the code numbering in your area may differ from those. The truth about attic bathroom venting. 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 have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be.

There are wall mount exhaust fans as well as ceiling exhaust fans. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. Options for venting a bathroom exhaust fan include best to worst. No you cannot vent the bathroom exhaust fan into the soffit vents.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. If you have a bathroom with a separate enclosed toilet you ll also need an additional fan for that space. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Each bathroom has its own exhaust fan.

So you will need to check with your city or county planning and permitting department to find out code requirements regarding bathroom fans.