Best Way To Vent Bathroom Fan In Attic

If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting.

Best way to vent bathroom fan in attic. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. To be properly terminated bathroom fans should exit the home through stem vents that are specifically used for this purpose. Either way the vent will have to go directly to the outside and installed with a vent hood cover.

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. I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. Bathroom vent exhausting into attic space. This involves running ductwork from the fan usually though an attic and out through the roof.

These stem vents should be properly connected to the bathroom ducts to ensure that moisture is traveling to the exterior not the attic space. Options for venting a bathroom exhaust fan include best to worst. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. 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.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Perhaps some confusion about up or down venting also arises because it is good practice for an overhead fan duct to slope down 1 8 to 1 4 per foot so that any condensation in the fan drips out of the wall vent or soffit vent rather than back into the bath ceiling. In order to accomplish this the roof has to have a hole cut in it. Through the roof or an exterior gable wall.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.