Bathroom Exhaust Fan To Attic

Options for venting a bathroom exhaust fan include best to worst.

Bathroom exhaust fan to attic.

If you have access to the attic the fan can vent either through a gable wall or roof. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. No you cannot vent your bathroom exhaust fan into the attic.

Climb into the attic and clear away any insulation from around the hole. Draw a mark on the bathroom ceiling where you d like to install the vent fan. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. Through the roof or an exterior gable wall.

Each fan vents separately out the roof. Each bathroom has its own exhaust fan. It s also important to note that if you install a roof vent cover for a clothes dryer you must remove the metal screen because it will catch lint and may turn into a fire hazard. A bird s nest in a bathroom vent will greatly reduce or eliminate the effectiveness of a bathroom exhaust fan.

One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. You should never exhaust the bathroom fan directly into the attic. Avoid venting through a soffit vent or ridge vent. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. For optimum performance locate it between the shower and the toilet.