Mixing Roof Vent Types

One of the consequences of mixing attic exhaust vent types can be weather infiltration such as the snow in this photo.

Mixing roof vent types.

The building codes and building science for. The saying more is less applies to exhaust vents for an attic. Posted april 1 2012 filed under gutter services roof installation roof repair maintenance. It is not advisable to install more than one type of roof exhaust vent upon a roof.

As a result in certain situations it is acceptable to mix different types of static vents. 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. Therefore reduce multiple outlet vent types to only one. Research has shown that in some instances combining a non.

Mixing different types of outlet vents interferes with that flow of air. Remember not every home is designed the same. 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. 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.

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.