Why should ridge ventilation openings be located at the ridge?

Ridge ventilation openings should be located at the ridge because this position effectively utilizes the negative pressure created by wind. When wind flows over the ridge of a roof, it creates a low-pressure area on the leeward side. This negative pressure is crucial for promoting airflow through the attic space. It helps to pull warm, moist air out of the attic and encourages cooler air intake through the soffit or eave vents.

This natural ventilation process assists in reducing heat buildup and moisture accumulation in the attic, which can contribute to ice dam formation in colder climates and reduce the overall efficiency of the insulation. By maximizing the efficiency of this airflow at the highest point of the roof, ridge vents help maintain a balanced ventilation system, improving the durability of the roof and the overall comfort of the home.