Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
1200'
Required Method:
1/300
Calculation:
1200 ÷ 300 = 4.00 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
4.00
Calculation:
4.00 x 144 = 576.00 sq. in of Code Required Ventilation
Square Inches Provided:
(8 x 72) = 576 sq. in
Square Inches Needed:
4.00 x 144 = 576.00 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
4
Low / Intake Vents Needed:
4
Total Vents Needed:
8
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Tile Profile Low (Tapered)
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?