Vent Through Roof Or Soffit

Vents through walls have to terminate at least 10 feet above the ground or adjacent surface but cannot be below a vented soffit.

Vent through roof or soffit.

A vent through the roof must terminate a minimum of 6 inches above the roof surface or 6 inches above any anticipated snow accumulation. A soffit vent is a type of roof vent. Steve is on to something importent there. One of the most used or popular roof vents is a turbine vent that has spinning tops.

And given the expectations for soffit venting and roof venting these days if an attic space is properly vented it would almost for sure preclude the soffit venting of any exhaust. Mark holes for soffit venting. If an exhaust vent is too close to an intake some of that moist warm air is headed in to the attic. 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.

Turbine or rotary vents are often seen in industrial buildings commercial spots or restaurants. Why not run vents through the soffit. Vent these fans through the roof or soffit. Add soffit venting first.

This reduces the efficiency of the vent and may trap heat or moisture in the elbows. For most homes the most popular and a better looking roof vent option is a soffit vent. Not a good thing. The roof contractor recommends the soffit to minimize protrusions through the roof.

I have gotten mixed opinions on whether to vent the new fan through the roof or through the soffit eave. Smaller on each side than the vent you re installing. When a vent terminates directly below a window door or air intake it must be. I am getting a new roof installed and tear off and likely a lot of plywood and am simultaneously getting a new bath vent fan.

They are usually easy to remove and cut holes through.