Total Square Feet of Attic Space to be Ventilated:
126000'
Required Method:
1/300
Calculation:
126000 ÷ 300 = 420.00 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation
420.00
Calculation:
420.00 x 144 = 60480.00 sq. in of Code Required Ventilation
Select Material and Determine Vents Required
Material:
Composition shingle
Placement
Square Inches Provided:
(840 x 72) = 60480 sq. in
Square Inches Needed:
420.00 x 144 = 60480.00 sq. in
High / Exhaust Vents Needed:
420
Low / Intake Vents Needed:
420
Total Vents Needed:
840
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
