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Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
650'
Required Method:
1/300
Calculation:
650 ÷ 300 = 2.17 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
2.17
Calculation:
2.17 x 144 = 312.48 sq. in of Code Required Ventilation
Square Inches Provided:
(4 x 98.75) = 395 sq. in
Square Inches Needed:
2.17 x 144 = 312.48 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
2
Low / Intake Vents Needed:
2
Total Vents Needed:
4
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?