How Many Roof Turbines Do I Need

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.

How many roof turbines do i need.

Other types there are also several other types of roof vents including dome or box shaped vents that run through the roof itself. 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. There s no point in wasting time and money getting the wrong ventilator for your roof though.

Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Good attic ventilation is important for preventing ice dams in the winter. Use this simple diy guide to figure out which turbine ventilator best suits your needs. 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.

Attic must have 5 sq. The table below is a guide that can be applied to most common roof types and pitches. All you need to know about attic ventilation. Enter square footage calculate or enter the square footage of the attic or area to be vented.

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. In addition pay attention to the maximum roof pitch that will work with the turbines. Since turbines are attached directly to attic spaces they can siphon away that moist air effectively. Appear too out of place on the roof.

How many vents do i need. Thus if your attic is 450 square feet you need roof vents equaling 3 square feet. There are also gable and roof fans which actively pull the hot air out of the attic. These specialty vents do not.

These will not rust. Calculation for common roof types. 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.

Using a roof turbine ventilator to increase the flow of air in your attic is a great idea. If you decide to add more turbine vents to your roof be sure to buy ones that are aluminum. You will first need to know the surface area of the roof in order to calculate how many turbine vents you will need. These can be ridge vents wind turbines or the flat vents your roofer wants to install.