How Many Roof Turbines Do I Need

There are also gable and roof fans which actively pull the hot air out of the attic.

How many roof turbines do i need.

Using a roof turbine ventilator to increase the flow of air in your attic is a great idea. These will not rust. Roof vents need to move hot humid air from the attic to the outdoors so that humidity doesn t build up and cause mold rot or other moisture problems that findlay roofing regularly sees when dealing with attic issues. Since turbines are attached directly to attic spaces they can siphon away that moist air effectively.

There s no point in wasting time and money getting the wrong ventilator for your roof though. If you decide to add more turbine vents to your roof be sure to buy ones that are aluminum. The table below is a guide that can be applied to most common roof types and pitches. Soffit vents to the peak of the roof.

Thus if your attic is 450 square feet you need roof vents equaling 3 square feet. The total nfa of the roof vents you need should be split 50 50 between intake and exhaust. One static vent style is the turbine. That rule can change if the slope of your roof is more than the average 6 12 slope a rise of six feet for a run of 12 feet because there will be more space heat and moisture to ventilate in the attic.

Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Calculation for common roof types. Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. How many vents do i need.

Attic must have 5 sq. In addition pay attention to the maximum roof pitch that will work with the turbines. Not all turbines will fit all roof pitches. Good attic ventilation is important for preventing ice dams in the winter.

Other types there are also several other types of roof vents including dome or box shaped vents that run through the roof itself. These can be ridge vents wind turbines or the flat vents your roofer wants to install. Turbine vents located higher on the roof s surface turbine vents make use of a wind powered turbine to suck all the moisture and hot air out of the attic. These specialty vents do not.

Appear too out of place on the roof. Use this simple diy guide to figure out which turbine ventilator best suits your needs. The turbines are adjustable so that the spinning part is level even though the roof is slanted. As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space.