Intake Vents For Attics

Constructed of white aluminum that can be painted.

Intake vents for attics.

Ridge vents and gable vents serve dual purposes and operate as both intake and exahust vents. 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. As a result the intake vents on the leeward side of the house will work with the exhaust vents to release air. In vent is ideal for roofers and remodelers who need to add attic roof intake ventilation to balance their ridge vents but can t access the soffits or overhangs.

In vent attic roof vent is an on the rooftop intake ventilation product that lets fresh air in when traditional soffit vents are out. Hot air exhaust vents located at the peak of the roof allow hot air to escape. As a result the intake vents on the leeward side of the house will work with the exhaust vents to release air. So how much intake ventilation do i need.

In this post we cover the intake ventilation. Power gable vent shutter is automatic 20 in. However if the attic has more exhaust than intake it is potentially problematic because the exhaust vents could become intake to compensate for the lack of balanced intake. Help protect your roof system from premature deterioration by installing a properly balanced attic ventilation system consisting of cobra exhaust vent at the ridge and adequate intake ventilation at or near the soffit areas of your roof.

These are the most common intake vents. Attic length x attic width 150 total vent space or net free area nfa. One method is to use a powered attic vent with a humidistat thermostat located close to the ridge or top of the roof. 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.

Soffit vents run the full length of a soffit the material underneath your eaves or are placed between the joists. Figure 7 mechanical ventilation used with a hip roof. The ideal amount of attic ventilation is one square foot of vent space for every 150 square feet of attic area. This value is split evenly between intake and exhaust ventilation.

Of course there should be intake vents to ensure a balanced system. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.