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Total Vents:
74
Where do I install vents graphic
Vent Placement Recommendations
High / Exhaust Vents Needed:
(Within 3' of Ridge Assembly)
37
Low / Intake Vents:
(Within Lower 1/3 of Attic)
37
Comp Roof Drawing
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
4,900
Code Required Method:
1/150 (STANDARD)
Calculation:
4,900 ÷ 150 = 32.67 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
32.67
Calculation:
32.67 x 144 = 4,704.48 sq. in. of Code Required Ventilation
Square Inches Provided:
(74 x 64.80) = 4,795.20 sq. in.
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
1/8" Noncombustible, Corrosion-Resistant Wire Mesh 64.80 sq. in.
Figures based on independent evaluation reports.
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