Bathroom Vents Go To Attic Or Outside

It is never ok to vent directly into an attic even if the attic itself is vented.

Bathroom vents go to attic or outside. Venting this fan into the attic is simply asking for problems. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. It may also violate a shingle warranty. It cannot move air to a crawlspace or attic.

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. Bathroom exhaust fans building bathroom fan vents improperly placed bathroom fans and attic ventilation bathroom exhaust fan into the attic fan to vent two bathrooms. While this may seem obvious homeowners may out of convenience direct the vent into either of these locations. No you cannot vent your bathroom exhaust fan into the attic.

The excessive moisture will cause condensation on the roof members insulation and eventually cause mold. Bathroom vent fans must be vented to the out of doors. Through the roof or an exterior gable wall. You should never exhaust the bathroom fan directly into the attic.

September 9 2020 by zamira leave a comment. Options for venting a bathroom exhaust fan include best to worst. 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. Leave the drill bit sticking through the roof so you can find the hole.

Bathroom vents to attic or outside. Start in the attic and drill a hole through the roof in the desired vent location. So the simple correct answer is no.