Attic Air Intake Vents

Master flow 18.

Attic air intake vents.

Roof vents will provide about half of the vent area and soffit vents the other half. Intake vents such as soffits are placed lower on the roof usually under the eaves. They are easy to install under the roof s overhang which is known as the soffit are generally hidden from sight and provide excellent protection from weather outdoor debris and pests while still allowing air to flow into the attic. More ways to filter.

Intake vents located at the lowest part of the roof under the eaves allow cool. Soffit vents are one of the most popular intake vent styles. The following product options will allow you to achieve an intake nfva of 528 square inches. Mark attic roof air vent locations.

Allows cool dry air to enter the attic. If not measure the size yourself. 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. This occurs through the rising of warm air and the falling of cooler air.

Intake vents are best when used in conjunction with roof exhaust vents. Mini louvers sold 6 louvers per bag 6 bags per carton only model mlm2mf. Air vent 2 in. Choose one of the following products to meet the recommended intake nfva of 528 square inches.

It s important there is a balance between the intake and exhaust ventilation to help ensure air flows smoothly and efficiently. Air intake vents are used to allow outside air to enter into attics. In order to create a consistent flow of cool dry air through your attic you need to make sure the air has a way to come in and go out. The open area of a vent is sometimes listed on the roof air vent as nfva net free vent area.

This allows cool dry air to enter the attic at the lowest point helping to remove any warm moist air from inside the attic through the exhaust vents along the entire underside of the roof deck. The two roof ventilation options intake vents and exhaust vents should be placed to take advantage of the natural increased speed of air circulation. 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. Intake vents should be located low on the roof or along the lowest eave or soffit of the roof assembly.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. What are air intake roof vents. How to install roof vents.