Venting Bathroom Fan Through Soffit Or Roof

When a bathroom exhaust duct terminates in a soffit it drips.

Venting bathroom fan through soffit or roof.

And the closer the termination is to the soffit vents that supply ventilation air to the attic the more likely that moisture from the bathroom will be drawn into the attic. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. So then the argument is that your humid bathroom exhaust comes out and is sucked back into the attic by the soffit vents built into most roof attic systems. That s why wall terminations are preferable to soffit terminations.

Even for the second story bathroom you can access the attic to vent the moisture outside. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Can i vent bathroom fan through soffit. The 2nd bathroom vent drips on the floor and is ruining the ceiling.

This eliminates the need for you to make a hole in the roof or your walls. Cooler air which is found under your roof overhang soffit is drawn up through the perforations of the soffit and exhausted through your roof venting system. By exhausting warm moist air in that area you will most certainly cause a mold problem in your attic usually very evident on the underside of the roof sheathing close to the area where where the exhaust outlet is found play it safe. Yes you can vent the bathroom fan through soffit.

Opposed to the traditional practices of venting a bathroom fan through a side wall or roof you can also vent it through a soffit which is much preferable in some cases as we will see in this article. A down through soffit exhaust vent design by leaving warm air in the exhaust duct when the fan is off creates a heat trap that reduces heat loss out of the bathroom through the exhaust fan duct when the fan is off in comparison with up routed vents or even horizontal vents through a gable end wall. If you are looking for a diy install roof ventilation is a risky job. Going through the roof guarantees it will go up in the air and away from your home i would love to see a copy of the building code that suggests venting a bathroom fan through the soffit is recommended.

As the warm moist air leaves the bathroom through a soffit it leaves in a downward motion. However natural air flow from the outside will bring. In cold weather it forms icicles. The alternative to a roof exhaust if you re concerned about not being able to seal the hole in the roof is to exhaust through a gable end.

If you are also amongst the people who are interested in avoiding making a hole in the roof and get the deed done using a soffit you have come to the right place. And while both a roof vent and an overhang vent perform this task there is one big difference. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.