How Many Turbines Do I Need On My Roof

There is a mathematical equation to determine how much venting you will need.

How many turbines do i need on my roof. This will give you square inches instead of square feet. Because you always want your intake nfa to meet or exceed the amount of exhaust nfa we will take the amount of exhaust provided and divide by the nfa rating of the deck air. Small turbine lots of air. Click here to see an assortment of turbine vents that i ve used on my jobs.

As the wind passes through the turbine vent a series of vanes within the turbine spin cycling humid air out of the attic. Attic must have 5 sq. These can be ridge vents wind turbines or the flat vents your roofer wants to install. Do roof turbines require maintenance.

Some turbines have ball bearings that need occasional lubrication. Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. First find out the square footage of your attic and sketch it onto the graph paper. Good attic ventilation is important for preventing ice dams in the winter.

There are also gable and roof fans which actively pull the hot air out of the attic. The benefits of using a turbine. How to install a lomanco whirlybird turbine vent add ventilation your roof s attic space. In contrast an active ventilation device might be an electric powered whole house fan or a powered roof ventilator.

Now take the square footage number and multiply it by 144. Turbine vents have been used for many years in both residential commercial agricultural and industrial buildings. As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space. 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.

What are roof turbines. How many turbine vents you will need depends on a number of factors including the size and type of building. Furthermore this will ensure that a continuous supply of air moves through the desired space. Rounding up you would need ten 10 750 vents.

To calculate the number of 750 vents needed divide 480 by 50 to get 9 6 vents. Made in the usa. The vents are very affordable easy to install and they pump vast amounts of air from attic spaces. Having the correct number of turbine vents will provide an effective and balanced system.

A roof turbine is a relatively small vent that utilizes the wind to remove humid air from an attic. During summer months turbines eliminate hot air from your attic helping you cool your home. Thus if your attic is 450 square feet you need roof vents equaling 3 square feet. I d put three or four on a roof to really have a good chance at cooling an attic on a hot summer day.

Roof turbines are typically 12 or 14 inches square so they take up minimal space.