How Many Roof Turbines Do I Need

Calculation for common roof types.

How many roof turbines do i need.

These will not rust. Using a roof turbine ventilator to increase the flow of air in your attic is a great idea. 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. The total nfa of the roof vents you need should be split 50 50 between intake and exhaust.

There are also gable and roof fans which actively pull the hot air out of the attic. Soffit vents to the peak of the roof. One static vent style is the turbine. There s no point in wasting time and money getting the wrong ventilator for your roof though.

In addition pay attention to the maximum roof pitch that will work with the turbines. As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space. How many vents do i need. The turbines are adjustable so that the spinning part is level even though the roof is slanted.

Appear too out of place on the roof. Use this simple diy guide to figure out which turbine ventilator best suits your needs. You will first need to know the surface area of the roof in order to calculate how many turbine vents you will need. If you decide to add more turbine vents to your roof be sure to buy ones that are aluminum.

Attic must have 5 sq. Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Other types there are also several other types of roof vents including dome or box shaped vents that run through the roof itself. All you need to know about attic ventilation.

These specialty vents do not. Since turbines are attached directly to attic spaces they can siphon away that moist air effectively. Not all turbines will fit all roof pitches. 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.

Thus if your attic is 450 square feet you need roof vents equaling 3 square feet. Good attic ventilation is important for preventing ice dams in the winter. Enter square footage calculate or enter the square footage of the attic or area to be vented. The table below is a guide that can be applied to most common roof types and pitches.