Back to Vent Calculator
Print
Address:
18011 & 18111 Apricot Way, Castro Valley, CA 94546
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
1900'
Required Method:
1/150
Calculation:
1900 ÷ 150 = 12.67 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
12.67
Calculation:
12.67 x 144 = 1824.48 sq. in of Code Required Ventilation
Square Inches Provided:
(26 x 72) = 1872 sq. in
Square Inches Needed:
12.67 x 144 = 1824.48 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
13
Low / Intake Vents Needed:
13
Total Vents Needed:
26
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?