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Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
1670'
Required Method:
1/300
Calculation:
1670 ÷ 300 = 5.57 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
5.57
Calculation:
5.57 x 144 = 802.08 sq. in of Code Required Ventilation
Square Inches Provided:
(12 x 72) = 864 sq. in
Square Inches Needed:
5.57 x 144 = 802.08 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
6
Low / Intake Vents Needed:
6
Total Vents Needed:
12
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?