Vent Bathroom Through Unfinished Attic

Can you vent a bathroom exhaust fan into the soffit vents.

Vent bathroom through unfinished attic. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.

Drive nail through house wall from attic. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. If you have access to the attic the fan can vent either through a gable wall or roof.

If you vent through the roof condensation will drip back into the interior. The 2nd bathroom vent drips on the floor and is ruining the ceiling. 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. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

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 the space. Moisture though is the real problem since it can create potentially hazardous mold and mildew eating away at your walls ceiling and trim. No you cannot vent the bathroom exhaust fan into the soffit vents. Bathrooms can only benefit from some type of exhaust venting system but which type do you need and what does the bathroom exhaust fan venting.

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. Smells are merely an annoyance. From outside use 4 inch hole saw to cut hole for wall cap. 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.

Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Bathrooms are wet smelly places that often are closed in and unventilated. This involves running ductwork from the fan usually though an attic and out through the roof. In this video this old house general contractor tom silva explains how to vent a bathroom fan.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. This will serve as a reference point for positioning the wall cap. 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.