How Many Roof Turbines Do I Need

Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof.

How many roof turbines do i need.

All you need to know about attic ventilation. You will first need to know the surface area of the roof in order to calculate how many turbine vents you will need. How many vents do i need. Appear too out of place on the roof.

Enter square footage calculate or enter the square footage of the attic or area to be vented. Since turbines are attached directly to attic spaces they can siphon away that moist air effectively. Soffit vents to the peak of the roof. Calculation for common roof types.

One static vent style is the turbine. Using a roof turbine ventilator to increase the flow of air in your attic is a great idea. Not all turbines will fit all roof pitches. In addition pay attention to the maximum roof pitch that will work with the turbines.

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. Good attic ventilation is important for preventing ice dams in the winter. 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.

The turbines are adjustable so that the spinning part is level even though the roof is slanted. The total nfa of the roof vents you need should be split 50 50 between intake and exhaust. Use this simple diy guide to figure out which turbine ventilator best suits your needs. 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. Thus if your attic is 450 square feet you need roof vents equaling 3 square feet. 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. There are also gable and roof fans which actively pull the hot air out of the attic.

These can be ridge vents wind turbines or the flat vents your roofer wants to install. As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space. The table below is a guide that can be applied to most common roof types and pitches. These will not rust.