Options for venting a bathroom exhaust fan include best to worst.
Bath fan venting into attic.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
The truth about attic bathroom venting.
In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.
This involves running ductwork from the fan usually though an attic and out through the roof.
Learn about bathroom exhaust fan venting code basic requirements.
Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair.
Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.
But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms.
Bathroom exhaust fans perform an important function by removing excess moisture from your home.
Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.
Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems.
Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.
The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside.
I would by lying if i told you that it will cause problems it may be totally fine.
No you cannot vent your bathroom exhaust fan into the attic.
The 8 best attic fans of 2020 8 ways to make a half bath shine.
Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons.
You should never exhaust the bathroom fan directly into the attic.
You d often blow air from one bathroom into the other and local building inspectors wouldn t approve it.
We explain how to install bathroom exhaust fans or vents the vent ducting.
In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly.
While this may seem obvious homeowners may out of convenience direct the vent into either of these locations.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.
This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo.
It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details.
