How Many Roof Vents Do I Need Calculator

The dormers are about 6 w x 5 d.

How many roof vents do i need calculator.

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. Plus i may need to place 2 vents on each of the dormers. If your roof is 1200 sq ft soffit floor space you will need 4 sq feet of roof ventilation. 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.

Can you help me please your quick response will be greatly appreciated. Fan calculation as a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space. Use avp s roof vent calculator to determine the number and size of exhaust vents you will need. 1 cubic foot is 12 x 12 144 cubic inches.

In order to find the right calculator divide the attic floor space by 300 sq feet. Enter square footage calculate or enter the square footage of the attic or area to be vented. The contractor is coming tomorrow 7 22 10 to install soffit vents and i need to determine how many vents using 8 x 16 vents do i actually need. 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.

Solar blaster attic ventilation calculator how many vents will my house 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. Thus if your attic is 450 square feet you need roof vents equaling 3 square feet. 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.

Next multiply the 4 square feet into cubic inches. Our soffit vents round back vents pop vents and universal vents make excellent intake vents.