GAF Cobra® Fascia Vent
Attic Intake Ventilation on a Coil!
Protect Your Roof From Premature Deterioration By Providing Effective Attic Intake Ventilation.
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Effective attic ventilation is critical for a long-lasting roof! A properly balanced attic ventilation system will help to:
- Remove excess heat and moisture to protect your roof from premature deterioration
- Prevent roof rot in your attic or roof deck
- Minimize peeling and extend the life of exterior and interior paint
- Limit the growth of harmful mold.
- Safeguard your attic possessions against mildew damage
- Guard against ice damming in harsh winter climates
- Possibly reduce excessive heating and air conditioning costs Cobra® fascia vent is a key part of the GAF-Elk Smart Choice® Roof System Solution, and has even earned the prestigious Good Housekeeping Seal.
Homeowner’s Best Choice
- Great Solution…
Provides excellent air intake in homes without soffits.
- Safeguards Possessions…
Limits mold growth and condensation by allowing cooler air to enter through fascia, forcing heat out at the roof’s exhaust vents.
- Looks Terrific…
Virtually hidden at the bottom of your home’s fascia for a clean and finished look.
- Protects Your Home…
Helps to prevent wood rot and extend the life of your exterior paint.
- Safer…
Cobra® fascia vent provides superior air intake, while helping to protect your attic space from insects, birds, and other unwanted infiltration.
Professional’s Best Choice
- Conveniently Packaged…
Two 50-foot sections packaged in roll form for easier handling.
- Easy To Install…
Just unroll and nail in place.
- Faster Applications…
Cobra® fascia vent is easily cut with standard utility knives.
- Use Anywhere…
Can be used on both wood and metal fascia systems, as well as low and steep slope applications.
- Sizes For Virtually Every Fascia…
Available in both 1" x 3" x 50' and 1 1/2" x 3"x 50' models for coverage on any fascia.
- Great Ventilator…
Net Free Area: 1" x 3": 11 sq. inches per foot 1 1/2" x 3": 16 sq. inches per foot
Balanced Ventilation Requirements
Balanced ventilation requires an equal amount of intake ventilation and exhaust ventilation. GAF-Elk 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® fascia vent that is needed.
- Find the appropriate amount of Cobra® fascia vent and minimum exhaust ventilation that corresponds to the total attic square footage.
Based on 1/300 Rule |
Total
Attic Square
Footage
|
Recommended Length of Cobra Fascia
Vent (Feet)*
|
Minimum Exhaust Ventilation (Net Free Area in Sq. In.)
|
1600 |
35/24 |
384 |
1900 |
42/29 |
456 |
2200 |
48/33 |
528 |
2500 |
55/38 |
600 |
2800 |
61/42 |
672 |
3100 |
68/47 |
744 |
3400 |
74/51 |
816 |
*First figure pertains to 1" width, second figure pertains to 1 1/2" width.
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.
Application Instructions
Cobra® Fascia Vent
Application Instructions
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