Total Square Feet of Attic Space to be Ventilated:
746'
Required Method:
1/300
Calculation:
746 ÷ 300 = 2.49 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation
2.49
Calculation:
2.49 x 144 = 358.56 sq. in of Code Required Ventilation
Select Material and Determine Vents Required
Material:
Composition shingle
Placement
Square Inches Provided:
(4 x 98.75) = 395 sq. in
Square Inches Needed:
2.49 x 144 = 358.56 sq. in
High / Exhaust Vents Needed:
2
Low / Intake Vents Needed:
2
Total Vents Needed:
4
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
