Exhaust Fan Into Roof

It seems like such an easy solution just leave a bathroom vent hose in an attic.

Exhaust fan into roof.

Florida home 30 years. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. If you vent the bathroom exhaust fan to close to the soffit vents which are vented plates under your homes outer edge and roof your home the air can be sucked right back into the attic from the soffit. I did not want to punch a hole into the roof so i ran the exhaust over to the soffit and installed it there with a vent.

Once inside the air heats up and rises higher ultimately exiting through venting at the roof s gables through ridge vents cut into the roof s apex or other vent holes in the roof. Hot air exhaust vents located at the peak of the roof allow hot air to escape. However you can vent a bathroom fan through an attic while it terminates on the roof or gable end. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof.

No you cannot vent the bathroom exhaust fan into the soffit vents. Through the roof or an exterior gable wall. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a. For a ceiling exit mark where you are going to cut the second hole for exiting from the house.

Apply asphalt roof. Each bathroom has its own exhaust fan. Hd and lowes sell soffit vents. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

It may also violate a shingle warranty. Start in the attic and drill a hole through the roof in the desired vent location. It was just venting into the attic. Installing a vent hood on the roof.

Go into the attic if you chose a ceiling exit and run the duct from the hole to an external wall or your roof. No you should not vent a bathroom fan directly into an attic. Each fan vents separately out the roof. As the air leaves it creates negative pressure behind it sucking in cool air from below into the soffits and creating a self repeating ventilation process.

Use stiff or flex ducting depending on your needs. Vent exhaust fans through a roof hood roof vent hood details. 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. Options for venting a bathroom exhaust fan include best to worst.

It s all outdoor air anyways right.