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Cobra Ridge Runner
Product Information |
Cobra Ridge Runner
Instructions,
Data Sheets, Warranties & Codes |
Cobra® Ridge Runner™ Exhaust Vent For Roof Ridge
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Effective attic ventilation is critical for a long-lasting roof!
Cobra® Ridge Runner™ Exhaust Vent is a key part of the GAF Lifetime
Roofing System, and has even earned the prestigious Good
Homeowner’s Best Choice
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Professional’s Best Choice
Texas Department of Insurance
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Balanced Ventilation Requirements
Balanced ventilation requires an equal amount of intake ventilation and exhaust ventilation. GAF recommends, at a minimum, providing 1 square foot of Net Free Ventilation for every 300 square feet of attic floor space. Consult local building codes for specific ventilation requirements in your area.
- Calculate the total square footage of the attic floor area (round up to the next highest number). This number will determine the minimum total linear feet of Cobra® Ridge Runner™ Exhaust Vent that is needed.
- Find the appropriate amount of Cobra® Ridge Runner™ Exhaust Vent and minimum intake ventilation that corresponds to the total attic square footage.
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Based on 1/300 Rule
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Total Attic
Square Footage |
Recommended Length of
Cobra® Ridge Runner™ Exhaust Vent (Feet) |
Minimum Intake Ventilation
(Net Free Area in Sq. In.) |
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1600
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31
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388
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1900
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37
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463
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2200
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43
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533
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2500
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48
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600
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2800
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54
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675
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3100
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60
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750
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3400
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66
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825
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Cobra® Ridge Runner™ Exhaust Vent has 12.5 sq. in./linear ft. of net free ventilating area.
NOTE: Always have a balanced ventilation system. In no case should the amount of exhaust ventilation at the ridge exceed the amount of soffit ventilation.
