Air Ventilation In Attic

Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.

Air ventilation in attic.

To lower attic temperatures and to remove excess moisture. That cuts cooling costs and prolongs shingle life. That said air resistance and interference such as vent grates reduces the area of true ventilation. Attic ventilation is an important part of an overall ventilation strategy to make homes more durable and comfortable.

Most building codes require a ratio of 1 150 ventilation space to attic floor space. In the summer good attic ventilation reduces heat buildup. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Roof ridge exhaust vent in black when installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra rigid vent 3 is a rigid style shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic while resisting wind driven rain infiltration.

Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation. The back side of the box doubles as the cut out templet for new installation or to confirm the hole in the roof is the correct size. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space.

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 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. Cobra rigid vent 3 11 5 in. The air vent attic ventilation fan for attics up to 2100 square feet.

Intake vents located at the lowest part of the roof under the eaves allow cool. Good ventilation allows the heat and moisture to escape. In the winter warm moist air seeps into the attic from the living space below. Attic ventilation serves two main functions.

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. The ventilation fan is made from quality components and is ready to install right out of the box.