Passive roof ventilation is the most economical way to ventilate your roofspace, however in saying that for a passive ventilator to work effectively there must be a design element to incorporate the principles of fluid dynamics. Without harnessing these principles a passive roof ventilator is useless.
Fluid dynamics explained – This is the study of liquids and gases in motion, the science for air and gasses in motion including aerodynamics. The harnessing of thermal airflows, wind driven, convection and the venturi effect. This is the basic science for any ventilator system to work to cool the home in summer and dry the roofspace from moisture problems every day of the year.
It is also desirable to have an inlet ventilator to allow cooler air to move freely throughout the cavity between the ceiling and the roof and to furthermore have an exhaust ventilator for the unclean moist still air to vacate the cavity of the roof. One of the best qualities of an effective passive roof ventilation system, there are no moving parts to wear out or ever need replacement.
So you need to be looking for a passive roof ventilation system that harnesses all the principles for fluid dynamics, that is aerodynamically designed, will never wear out and will keep you cool in summer and the cavity of the roof dry from moisture every day of the year. Look no further you are here.