Enter square footage calculate or enter the square footage of the attic or area to be vented.
Attic intaek vents.
Additionally any excess intake will become exhaust on the leeward side of the house because the intake vents on the windward side of the house will have.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
The first step is to check out this 60 second video and learn about the 300 1 rule the difference between intake and exhaust ventilation and why proper ventilation is so important to get right to help calculate your attic ventilation needs visit gaf ventilation calculator.
One method is to use a powered attic vent with a humidistat thermostat located close to the ridge or top of the roof.
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.
Figure 7 mechanical ventilation used with a hip roof.
Soffit vents are one of the most popular intake vent styles.
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.
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.
The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.
It s important there is a balance between the intake and exhaust ventilation to help ensure air flows smoothly and efficiently.
Intake vents such as soffits are placed lower on the roof usually under the eaves.
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.
How do you pick the right attic vent.
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.
Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator.
Take for example ridge vents.
I have roof vents so i have roof ventilation.
If the attic ventilation system cannot be balanced 50 intake 50 exhaust it s better to have more intake than exhaust because it s been our experience most houses lack proper intake.
