How Do I Vent Out Attic From Bathroom Fan Through

From inside the attic drive a nail through the roof directly above the bathroom vent fan.

How do i vent out attic from bathroom fan through.

The master bathroom and the 2nd bathroom vent through the roof and through the same opening. Let the bathroom vent fan run throughout your bath or shower and just as importantly leave it on for at least 15 minutes after you re finished to fully air out. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

How do i properly vent a bathroom fan into an attic. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. The correct way to vent a bathroom fan through an attic is to terminate the vent either to the roof or to the gable wall.

A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. From the roof find the nail and use the utility knife to cut roof shingles from around the nail. This will serve as a reference point for positioning the wall cap. Drive nail through house wall from attic.

The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. From outside use 4 inch hole saw to cut hole for wall cap. Slide a flat pry bar underneath the shingles around the nail to break the weather seal. Can you vent a bathroom exhaust fan into the soffit vents.

But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. The best way to do it is to give the bathroom exhaust fan its own direct vent to the outside of your home and not into the attic where it can mix with the air causing the issues mentioned above. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Either way the vent will have to go directly to the outside and installed with a vent hood cover.

Center the nail between two rafters. Do let your fan run long enough. No you cannot vent the bathroom exhaust fan into the soffit vents. In this video this old house general contractor tom silva explains how to vent a bathroom fan.