Bathroom Vents Go To Attic Or Outside

Bathroom vent fans must be vented to the out of doors.

Bathroom vents go to attic or outside.

Venting this fan into the attic is simply asking for problems. So the simple correct answer is no. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. 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.

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. Start in the attic and drill a hole through the roof in the desired vent location. Options for venting a bathroom exhaust fan include best to worst.

Try to keep it close to the fan location. The excessive moisture will cause condensation on the roof members insulation and eventually cause mold. 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 cannot move air to a crawlspace or attic.

Through the roof or an exterior gable wall. Bathroom vents to attic or outside. It may also violate a shingle warranty. September 9 2020 by zamira leave a comment.

You should never exhaust the bathroom fan directly into the attic. While this may seem obvious homeowners may out of convenience direct the vent into either of these locations. Leave the drill bit sticking through the roof so you can find the hole.