Product Brochure

Benefits: Product details:
To learn more about the Lifetime Roofing
System visit gaf.com/Lifetime
We protect what matters most
™
Balanced attic ventilation means there’s
an equal amount of air entering it as
there is exiting it. The amount of exhaust
ventilation must never exceed the
amount of intake ventilation at the soffits
or eaves. GAF recommends a minimum
of 1 sq. ft. of net free ventilation for every
300 sq. ft. of attic floor space. Always
consult local building codes for specific
ventilation requirements.
How Much Do I Need?
Calculate the total square footage of
your attic floor space and then review
the chart below for how much Cobra
®
Exhaust Vent For Roof Ridge is needed:
For use in all climates
n
Net free ventilating area:
– Hand nail version: 16.9 sq. in./lin. ft.
(35,772 mm
2
per lineal meter)
– Nail gun version: 14.1 sq. in./lin. ft.
(29,845 mm
2
per lineal meter)
n
Hand nail version includes Smart Nail
™
fasteners
n
Nail gun version includes 1 ¾" (44 mm) coil nails
n
For roof pitches 2:12 to 20:12
n
Available in 8" (203 mm), 10.5" (267 mm)
and 11.75" (298 mm) widths for use with
10" (254 mm), 12" (305 mm) and metric
width ridge cap shingles
n
Available in 20' (6.1 m) & 50' (15.24 m) lengths
Code Approvals & Standards:
n
Miami-Dade County Product Control approved
n
State of Florida Approved
n
UL ER15072-01
n
Texas Department of Insurance Product
Evaluation RV-19
n
CCMC14083 - R
n
UL Listed to ANSI/UL 790 Class A
3
Balanced Ventilation:
Cobra
®
Exhaust Vent
For Roof Ridge
1. Warm, moist air escapes attic through
Cobra
®
Exhaust Vent For Roof Ridge
(installed under ridge cap shingles)
2. Fresh air enters attic through intake vent at
soffit or eave
n
Allows heat and condensation
to escape at the most effective
location—the ridge
n
Shingle-over design makes it virtually
invisible when installed
n
Promotes energy eciency by
reducing excessive heat in your attic
n
Manufactured with 100%
recycled bers
n
Flexible roll design allows for quick
and easy installation
n
Compression-resistant to help reduce
waviness that can detract from the
look of your roof
n
Passes the 110 mph wind-driven
rain test
1
n
Eligible for up to a Lifetime limited
warranty.
2
It’s also an eligible
component for GAF residential
enhanced warranties
Spacing small
1
Under controlled laboratory testing conducted by GAF
2
Lifetime refers to the length of warranty coverage provided and means
as long as the original individual owner(s) of a single-family detached
residence [or eligible second owner(s)] owns the property where the
qualifying GAF products are installed. For other owners/structures,
Lifetime coverage is not applicable. Lifetime coverage on shingles
requires the use of GAF Lifetime Shingles only. Lifetime coverage on
shingles and accessories requires the use of any GAF Lifetime Shingle
and any 3 qualifying GAF Accessories. See GAF Roofing System
Limited Warranty for complete coverage and restrictions. Visit gaf.
com/LRS for qualifying GAF products. For installations not eligible
for the GAF Roofing System Limited Warranty, see the GAF Shingle &
Accessory Limited Warranty.
3
Refer to UL Online Certification Directory for actual assemblies
©2020 GAF 7/20 • #105 • RESCB137 377951-0720
Total attic sq. footage
Recommended length of
Cobra
®
Exhaust Vent (.)*
Minimum Intake Ventilation
(net free area in sq. in.)
*
160 0 23/28 389/395
190 0 27/3 3 4 5 7/4 6 6
2200 32/38 541/5 3 6
2500 36/43 609/607
2800 40/48 676/677
3100 45/53 761/748
3400 49/58 829/818
Spacing paragraph and chart
1
2
2
* First figure pertains to hand nail version, second figure pertains to nail gun version
Note: Chart above based on 1/ 300 rule. Always have a balanced attic ventilation system. In no case should the amount of exhaust ventilation exceed the amount
of intake ventilation. Visit www.gaf.com/ ventcalculator for more details.
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