Bathroom Exhaust To Attic

Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.

Bathroom exhaust to attic. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. It seems like such an easy solution just leave a bathroom vent hose in an attic. Wall mount fans are mounted on an external wall of a home and are used if there isn t a way to vent through the roof as in the case of a bathroom on the first floor of a home. Through the roof or an exterior gable wall.

Bathroom fan sound levels. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Keep calm if that happens to you. It may also violate a shingle warranty.

If you have access to the attic the fan can vent either through a gable wall or roof. There are wall mount exhaust fans as well as ceiling exhaust fans. Climb into the attic and clear away any insulation from around the hole. This section notes that air exhausted from the bathroom must be sent outdoors not indoors to the same residence or indoors to any other dwelling unit.

It cannot move air to a crawlspace or attic. T he result of the insulation problem around a bathroom exhaust fan is either water stains or mold near the vent of your bathroom. It s all outdoor air anyways right. No you cannot vent your bathroom exhaust fan into the attic.

For optimum performance locate it between the shower and the toilet. Insulation problems will lead to other problems like the fan not being able to extract any humidity from the bathroom at all. See bathroom vent duct termination for details about how to terminate the bath exhaust vent duct. Dumping bathroom exhaust into an attic or under roof space invites costly mold contamination frost under the roof in freezing climates moisture damage to roof sheathing possibly even plywood delamination or rot roof failures and shorter roof shingle life.

However you can vent a bathroom fan through an attic while it terminates on the roof or gable end. Avoid venting through a soffit vent or ridge vent. Ceiling fans vent either into the attic or outside through the roof. Example model ventilation codes.

Exhaust air from toilet rooms and bathrooms shall not discharge into attic crawl space or other areas inside building. No you should not vent a bathroom fan directly into an attic. While this may seem obvious homeowners may out of convenience direct the vent into either of these locations. Options for venting a bathroom exhaust fan include best to worst.

You should never exhaust the bathroom fan directly into the attic.