Attic Air Ventilation System

To lower attic temperatures and to remove excess moisture.

Attic air ventilation system.

When installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. About 90 percent of homes in the us have unreasonably high levels of moisture. It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters.

In a properly designed and installed attic ventilation system that means the air will flow from the intake vents to the exhaust vents flushing out the warm moist air along the entire underside of the roof deck. It is the recommendation of the ravc that the attic ventilation system always is balanced. In the summer good attic ventilation reduces heat buildup. Lowering the temperature in the attic can help reduce air conditioning energy costs and roof deck temperature optimize the service life of a roof covering and minimize ice damming.

In short an adequate and balanced ventilation system is one that allows an equal amount of air to enter and exit the attic area. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the. Air follows the path of least resistance. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Understanding whether your home could benefit from some form of attic ventilation might just be if not a life saver a roof saver. The exact number of intake and exhaust vents your roof needs is figured based on the square footage and volume of the attic area. In essence all ventilation is about circulating air to keep it fresh and to reduce moisture levels. Plus roofing and attic ventilation systems can protect homes from the expensive roof and structural damage caused by trapped heat ice dams moisture and mold.

Attic ventilation serves two main functions. This means an equal amount of intake net free area through vents positioned in the soffit overhang or near the roof s lowest edge and exhaust net free area through vents installed at or near the peak of the roof. Good ventilation allows the heat and moisture to escape. That keeps your attic dry and reduces ice dams.

That cuts cooling costs and prolongs shingle life.