Back to Vent Calculator
Print
Total Vents:
12
Where do I install vents graphic
Vent Placement Recommendations
High / Exhaust Vents Needed:
(Within 3' of Ridge Assembly)
6
Low / Intake Vents:
(Within Lower 1/3 of Attic)
6
Comp Roof Drawing
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
840
Code Required Method:
1/150 (EXCEPTION)
Calculation:
840 ÷ 150 = 5.60 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
5.60
Calculation:
5.60 x 144 = 806.40 sq. in. of Code Required Ventilation
Square Inches Provided:
(12 x 72) = 864 sq. in.
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
1/4" Noncombustible, Corrosion-Resistant Wire Mesh 72 sq. in.
Figures based on independent evaluation reports.
Vent Solutions
Questions?