Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
3500'
Required Method:
1/150
Calculation:
3500 ÷ 150 = 23.33 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
23.33
Calculation:
23.33 x 144 = 3359.52 sq. in of Code Required Ventilation
Square Inches Provided:
(48 x 72) = 3456 sq. in
Square Inches Needed:
23.33 x 144 = 3359.52 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
24
Low / Intake Vents Needed:
24
Total Vents Needed:
48
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?