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Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
720'
Required Method:
1/150
Calculation:
720 ÷ 150 = 4.80 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
4.80
Calculation:
4.80 x 144 = 691.20 sq. in of Code Required Ventilation
Square Inches Provided:
(10 x 72) = 720 sq. in
Square Inches Needed:
4.80 x 144 = 691.20 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?