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Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
3000'
Required Method:
1/150
Calculation:
3000 ÷ 150 = 20.00 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
20.00
Calculation:
20.00 x 144 = 2880.00 sq. in of Code Required Ventilation
Square Inches Provided:
(30 x 98.75) = 2962.5 sq. in
Square Inches Needed:
20.00 x 144 = 2880.00 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
15
Low / Intake Vents Needed:
15
Total Vents Needed:
30
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 98.75 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?