Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
900'
Required Method:
1/300
Calculation:
900 ÷ 300 = 3.00 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation
3.00
Calculation:
3.00 x 144 = 432.00 sq. in of Code Required Ventilation
Select Material and Determine Vents Required
Material:
Composition shingle
Placement
Square Inches Provided:
(