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Address:
1172 Raymond Ave., Napa, CA 94559-2165
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
590'
Required Method:
1/150
Calculation:
590 ÷ 150 = 3.93 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
3.93
Calculation:
3.93 x 144 = 565.92 sq. in of Code Required Ventilation
Square Inches Provided:
(8 x 72) = 576 sq. in
Square Inches Needed:
3.93 x 144 = 565.92 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
4
Low / Intake Vents Needed:
4
Total Vents Needed:
8
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?