Total Square Feet of Attic Space to be Ventilated:
1854'
Required Method:
1/150
Calculation:
1854 ÷ 150 = 12.36 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation
12.36
Calculation:
12.36 x 144 = 1779.84 sq. in of Code Required Ventilation
Select Material and Determine Vents Required
Material:
Composition shingle
Placement
Square Inches Provided:
(20 x 98.75) = 1975 sq. in
Square Inches Needed:
12.36 x 144 = 1779.84 sq. in
High / Exhaust Vents Needed:
10
Low / Intake Vents Needed:
10
Total Vents Needed:
20
Material:
Composition shingle
Product:
Low Profile - "Tapered"
Benefits of Attic Ventilation
1. Extends the roof's life
2. Curb appeal
3. Balanced System
4. Fits with Solar Systems
5. Validate the Warranty
6. Enhances Above-Sheathing Ventilation (ASV)
7. Reduces Moisture/Removes Trapped Gases
8. Energy conservation
