Bathroom Vents Go To Attic Or Outside

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 vents go to attic or outside.

It may also violate a shingle warranty. Leave the drill bit sticking through the roof so you can find the hole. Try to keep it close to the fan location. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.

No you cannot vent your bathroom exhaust fan into the attic. 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. The excessive moisture will cause condensation on the roof members insulation and eventually cause mold. So the simple correct answer is no.

September 9 2020 by zamira leave a comment. 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. Bathroom vents to attic or outside.

Through the roof or an exterior gable wall. It cannot move air to a crawlspace or attic. It is never ok to vent directly into an attic even if the attic itself is vented. 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.

Venting this fan into the attic is simply asking for problems. You should never exhaust the bathroom fan directly into the attic. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.