Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
105'
Required Method:
1/150
Calculation:
105 ÷ 150 = 0.70 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
0.70
Calculation:
0.70 x 144 = 100.80 sq. in of Code Required Ventilation
Square Inches Provided:
(2 x 98.75) = 197.5 sq. in
Square Inches Needed:
0.70 x 144 = 100.80 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
1
Low / Intake Vents Needed:
1
Total Vents Needed:
2
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?