A passive roofing ventilation system is a method of ventilating the roof space without using mechanical fans. Instead, it relies on natural airflow – using the principles of convection (warm air rising) and wind pressure differences – to allow hot, moist, or stale air to escape while drawing in cooler, fresh air.

Masons Roof Ventilation System includes:

• RIDGE VENTS to let warm air escape

• VENTILATED ROOF BATTENS to create airflow under the roofing

• INSUL-BAFFLE to preserve a clear air path near the eaves