What is the solution to roof ventilation? The trick to the best solution to effectively ventilate a roofspace, is to use all the principles of fluid dynamics – fluid dynamics explained: is the study of air and gases in motion – pressure, density, flow velocity and temperature functions. For roof ventilation the need is to harness the use of fluid dynamics through the principles of convection, the venturi effect and natural air flows.

Natural convection is caused by buoyancy forces due to density differences caused by temperature variations in the air. At heating the density change in the boundary layer will cause the air to rise and be replaced by cooler air that will also heat and rise infinitely. This phenomena is called natural convection. “Newton’s Law of Cooling”.
The venturi effect - the average flow speed of air doubles through a constriction causing air to pass through a small area and increasing the airs velocity. The speed up of air through a constriction due to the pressure rise on the upwind side of the constriction and the pressure drop on the downwind side as the air diverges to leave the constriction. 
Air flow – natural movement of air
Air currents - atmospheric flow : wind.
In order to have an effective solution to roof ventilation we need to harness these three principles of fluid dynamics - convection the venturi effect and wind driven air flows.
So in order to effectively solve the problem for roof ventilation by harnessing all the principles of fluid dynamics we will need to have inlets and outlets in the roof covering as well as the use of aerodynamics in the design of the roof ventilator system.

Universal Tile Ventilators are the best solution to roof ventilation as there are inlets and outlets within the roof covering, they have been purposely aerodynamically designed to harness the principles for fluid dynamics and to take all that Mother Nature has to throw at them.

You can’t beat that – Universal Tile Ventilators for tiled roofs and the Smoothline® Ventilator System for corrugated colorbond roofs.