And in many of these cases the hip roof forms a large volumetric attic space to ventilate.
Attic intaek 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.
This occurs through the rising of warm air and the falling of cooler air.
The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.
Figure 7 mechanical ventilation used with a hip roof.
Intake vents located at the lowest part of the roof under the eaves allow cool.
While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all.
Intake vents such as soffits are placed lower on the roof usually under the eaves.
Of course there should be intake vents to ensure a balanced system.
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.
One method is to use a powered attic vent with a humidistat thermostat located close to the ridge or top of the roof.
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.
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.
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.
Soffit vents are one of the most popular intake vent styles.
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.
The two roof ventilation options intake vents and exhaust vents should be placed to take advantage of the natural increased speed of air circulation.
I have roof vents so i have roof ventilation.
How do you pick the right attic vent.
It s important there is a balance between the intake and exhaust ventilation to help ensure air flows smoothly and efficiently.
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.
