Total Square Feet of Attic Space to be Ventilated:
1830'
Required Method:
1/150
Calculation:
1830 ÷ 150 = 12.20 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation
12.20
Calculation:
12.20 x 144 = 1756.80 sq. in of Code Required Ventilation
Select Material and Determine Vents Required
Material:
Composition shingle
Placement
Square Inches Provided:
(26 x 72) = 1872 sq. in
Square Inches Needed:
12.20 x 144 = 1756.80 sq. in
High / Exhaust Vents Needed:
13
Low / Intake Vents Needed:
13
Total Vents Needed:
26
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
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