How Many Roof Vents Do I Need In My Roof

And this guideline you ll need a minimum of.

How many roof vents do i need in my roof.

Rounding up you would need ten 10 750 vents. You will need to have 1 square foot of vent area for every 150 square feet of attic space. For example if you have 1200 square feet of attic space you should need at least 4 air vents to ensure proper ventilation. Thus if your attic is 450 square feet you need roof vents equaling 3 square feet.

As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space. So if your attic is 450 square feet you will need 3 square feet of vent space evened out throughout the entire space and divided equally between inlet and outlet vents. To calculate the number of 750 vents needed divide 480 by 50 to get 9 6 vents. You ll need the square footage of your attic to calculate the number of roof vents that you should need.

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation for every 300 square feet of attic floor space evenly split between intake and exhaust. Use the calculator below to find out how many exhaust and intake vents you will need on your house. Near ridge of the roof. They should be divided equally between inlet and outlet vents and they can be used in any combination that will work with your roof s design.