How to Plan a Balanced Attic Ventilation System | GAF Roofing Materials

In this video, you will learn the following:

– How to calculate a balanced attic ventilation system
– How to calculate the NFV (Net Free Ventilation)
– What is the 1:300 Rule?
– How to select the right intake and exhaust ventilation products for your attic
– What are NVA Ratings?
– What is the balanced ventilation rule?
– How to place your intake and exhaust ventilation.

To learn more and to help calculate your ventilation needs, visit