Bathroom Exhaust Fan To Attic

Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.

Bathroom exhaust fan to attic.

Avoid venting through a soffit vent or ridge vent. Each fan vents separately out the roof. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. For optimum performance locate it between the shower and the toilet.

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. 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. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent.

Each bathroom has its own exhaust fan. You should never exhaust the bathroom fan directly into the attic. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. No you cannot vent your bathroom exhaust fan into the attic.

Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. Climb into the attic and clear away any insulation from around the hole. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

Through the roof or an exterior gable wall. A bird s nest in a bathroom vent will greatly reduce or eliminate the effectiveness of a bathroom exhaust fan. 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.