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Address:
1800 Hemlock Street, Chico CA 95928
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
2000'
Required Method:
1/300
Calculation:
2000 ÷ 300 = 6.67 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
6.67
Calculation:
6.67 x 144 = 960.48 sq. in of Code Required Ventilation
Square Inches Provided:
(20 x 98.75) = 1975 sq. in
Square Inches Needed:
6.67 x 144 = 960.48 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
10
Low / Intake Vents Needed:
10
Total Vents Needed:
20
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?