Attic Intaek 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.

Attic intaek vents. 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. Intake vents located at the lowest part of the roof under the eaves allow cool. 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. I have roof vents so i have roof ventilation.

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 two roof ventilation options intake vents and exhaust vents should be placed to take advantage of the natural increased speed of air circulation. Enter square footage calculate or enter the square footage of the attic or area to be vented. 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.

It s important there is a balance between the intake and exhaust ventilation to help ensure air flows smoothly and efficiently. How do you pick the right attic vent. And in many of these cases the hip roof forms a large volumetric attic space to ventilate. 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.

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. 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. Intake vents such as soffits are placed lower on the roof usually under the eaves. One method is to use a powered attic vent with a humidistat thermostat located close to the ridge or top of the roof.

Figure 7 mechanical ventilation used with a hip roof. Take for example ridge vents. This occurs through the rising of warm air and the falling of cooler air. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all.