Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
4250'
Required Method:
1/150
Calculation:
4250 ÷ 150 = 28.33 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
28.33
Calculation:
28.33 x 144 = 4079.52 sq. in of Code Required Ventilation
Square Inches Provided:
(46 x 98.75) = 4542.5 sq. in
Square Inches Needed:
28.33 x 144 = 4079.52 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
23
Low / Intake Vents Needed:
23
Total Vents Needed:
46
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?