Attic must have 5 sq.
Gravity type roof ventilator.
In order to take advantage of both wind pressure and stack effect gravity ventilators are generally used in conjunction with open doors and windows to ventilate the structure.
Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof.
Engineered and certified for both flat roof ventilation and steep slope ventilation the aura gravity ventilator is available for both residential and commercial buildings.
Gravity vents are placed on the roof being the highest part of the structure to provide for exhaust of building air.
Gravity intake and relief ventilators for use in non powered applications.
Ul listed this gravity roof vent is rated to withstand wind pressures of over 50 psf which is equivalent to wind speeds exceeding 200 mph.
These can be ridge vents wind turbines or the flat vents your roofer wants to install.
Use hooded gravity roof vents with either nonpowered ventilation or in conjunction with powered exhaust supply or reversible fans.
Often referred to as natural ventilation roof mounted gravity vents work on the principle that hot air rises as the inside of your building heats up during the day that excess heat is released naturally through the vents.