Cobra® Attic Exhaust Vent for Roof Ridge
Balanced Ventilation Requirements (U.S. Only)
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.
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.
All documents are U.S. English unless otherwise noted