Address:
2160 ANGUS DR WALNUT CREEK
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
481'
Required Method:
1/300
Calculation:
481 ÷ 300 = 1.60 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
1.60
Calculation:
1.60 x 144 = 230.40 sq. in of Code Required Ventilation
Square Inches Provided:
(4 x 64.8) = 259.2 sq. in
Square Inches Needed:
1.60 x 144 = 230.40 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
2
Low / Intake Vents Needed:
2
Total Vents Needed:
4
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 64.8 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?