Bathroom Vents Go To Attic Or Outside

While this may seem obvious homeowners may out of convenience direct the vent into either of these locations.

Bathroom vents go to attic or outside.

It may also violate a shingle warranty. So the simple correct answer is no. 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. No you cannot vent your bathroom exhaust fan into the attic.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. September 9 2020 by zamira leave a comment. The excessive moisture will cause condensation on the roof members insulation and eventually cause mold. Options for venting a bathroom exhaust fan include best to worst.

Through the roof or an exterior gable wall. Start in the attic and drill a hole through the roof in the desired vent location. It is never ok to vent directly into an attic even if the attic itself is vented. Venting this fan into the attic is simply asking for problems.

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. Bathroom vents to attic or outside. It cannot move air to a crawlspace or attic. Bathroom vent fans must be vented to the out of doors.

You should never exhaust the bathroom fan directly into the attic. 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. Leave the drill bit sticking through the roof so you can find the hole.