Mixing Roof Vent Types

As a result in certain situations it is acceptable to mix different types of static vents.

Mixing roof vent types. The building codes and building science for. Over the brief 15 year life of the roof when the power vent would turn on it turned the four box vents into intake vents which sucked water into the attic and destroyed the roof deck adjacent and below the vent. The reason is simply due to the fact that various types of roof exhaust vents provide varying amounts of exhaust ventilation. It is not advisable to install more than one type of roof exhaust vent upon a roof.

In this scenario from the outside the roof will be seen to have different roof vent types yet from inside each air space only has like kinds. One of the consequences of mixing attic exhaust vent types can be weather infiltration such as the snow in this photo. The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture. Mixing different types of outlet vents interferes with that flow of air.

The saying more is less applies to exhaust vents for an attic. Therefore reduce multiple outlet vent types to only one. Research has shown that in some instances combining a non. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals.

Mixing or combining two or more different types of exhaust vents ridge vents wind turbines roof louvers gable louvers roof mount power fans and gable mount power fans on the same roof above a common attic can actually short circuit the attic ventilation system.