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Cobra Rigid Vent
2
Product Information |
Cobra Rigid Vent
2 Instructions,
Data Sheets, Warranties, & Codes |
Cobra® Rigid Vent 2™ Exhaust Vent For Roof Ridge
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Effective attic ventilation is critical for a long-lasting roof! A properly balanced attic ventilation system will help to:
Cobra® Rigid Vent 2™ exhaust vent is a key part of the GAF Smart Choice® Weather Stopper® Roofing System, and has even earned the prestigious Good Housekeeping Seal.
Homeowner’s Best Choice
*Under controlled laboratory conditions **See ltd. warranty for complete coverage and restrictions |
Professional’s Best Choice
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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® Rigid Vent 2™ exhaust vent that is needed.
- Find the appropriate amount of Cobra® Rigid Vent 2™ 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®
Rigid Vent 2™ Exhaust Vent (Feet) |
Minimum Intake Ventilation
(Net Free Area in Sq. In.) |
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1600
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22
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396
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1900
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26
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468
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2200
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30
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540
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2500
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34
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612
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2800
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38
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684
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3100
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42
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756
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3400
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46
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828
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Cobra® Rigid Vent 2™ exhaust vent has 18.0 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.
Cobra Rigid Vent 2
Is
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YOU
GET:
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See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.
The word "Lifetime" means as long as the original individual owner of
a single family detached residence (or the second owner in certain circumstances)
owns the property where the shingles and accessories are installed. For owners/structures
not meeting above criteria, Lifetime coverage is not applicable. Lifetime ltd. warranty
on accessories requires the use of at least three qualifying GAF accessories and
the use of Lifetime Shingles.
