Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
1800'
Required Method:
1/150
Calculation:
1800 ÷ 150 = 12.00 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
12.00
Calculation:
12.00 x 144 = 1728.00 sq. in of Code Required Ventilation
Square Inches Provided:
(18 x 98.75) = 1777.5 sq. in
Square Inches Needed:
12.00 x 144 = 1728.00 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
9
Low / Intake Vents Needed:
9
Total Vents Needed:
18
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Tile Profile Low (Tapered)
Wire Mesh 98.75 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?