Back to Vent Calculator
Print
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
1500'
Required Method:
1/300
Calculation:
1500 ÷ 300 = 5.00 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
5.00
Calculation:
5.00 x 144 = 720.00 sq. in of Code Required Ventilation
Square Inches Provided:
(10 x 72) = 720 sq. in
Square Inches Needed:
5.00 x 144 = 720.00 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
5
Low / Intake Vents Needed:
5
Total Vents Needed:
10
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?