Round Back Static Roof Vent

Static Vents on a Pitched Roof
Residential Static Vent the Round Back Roof Vent Painted Black

An Excellent Static Vent for Ventilating Low & Steep Slope Roofs.

Attic Ventilation: Needed for the life of your roof

Maintaining proper roof ventilation is essential for the health and longevity of your home. One effective solution for ventilating sloped roofs is the use of static vents. Static vents, or Round Back Vents, a Miami-Dade County approves static vent that is both compact and powerful. Round Backs vents effectively exhaust hot air in the summer and moisture in the winter. We will explore the benefits of static vents and why they are an excellent choice for roof ventilation.

What are Static Vents?

Static vents, such as the Round Back Static Vent, are roof vents installed near the roof's peak. Active Ventilation Products Round Back Vents are rust-free aluminum and feature 1/8-inch inner louvers that prevent rain, snow, insects, and animals from entering the inside of the vent. Despite their compact size, Round Back Static Vents are highly effective in ventilating attic spaces and maintaining the beauty of your roof.

The Importance of Roof Ventilation

Proper roof ventilation controls attic temperatures, keeps them cooler in the summer, and prevents excessive heat buildup. Attic ventilation can improve energy efficiency and reduce strain on your air conditioning system. Additionally, it helps prevent ice dam formation during the winter by removing stale air from the attic.

1. Efficient Airflow and Protection

Roof vents, like the Round Back Static Vent, are designed to provide optimal airflow while protecting your attic from external elements. The inner-louver design of the vents creates 1/8-inch openings, allowing for excellent ventilation while preventing the entry of rain, snow, insects, and wildlife from entering. This engineered design ensures that your attic remains well-ventilated and free from potential damage caused by moisture or pests.

2. Versatility and Adaptability

Round Back Static Vents come in various diameters and two collar heights, making them suitable for installation in different climate zones and on multiple roofs. Whether you have a flat roof in warm climates or a steep slope roof in all environments, a static vent option is available for your specific needs. Additionally, if you need to ventilate a duct, Roof Jack Vent Caps are available. Static vents with curb mount flanges are available for installation on roof curbs.

3. Exceptional Durability

Passive roof vents, like The Round Back Static Vent, are built to withstand extreme weather conditions, and when it comes to hurricanes, you need additional strength and reliability. That's why The Round Back Vent has undergone the rigorous Dade County test, simulating the unforgiving forces of a Category 5 hurricane.

The Round Back Vents go beyond sheer durability. Third-party testing shows that these vents endured wind pressure exceeding 200mph. They protect your home while optimally ventilating your attic environment year-round, safeguarding it from wind-driven rain and snow.

UL listed these vents have also been certified by the Texas Department of Insurance, approved by Florida State, and conform to the standards of CALFIRE. With these certifications, you can trust that Round Back Static Vents will perform reliably and effectively in even the harshest climates.

Net Free Area
in Sq. In.

2" Tall Collar

4" Tall Collar

How Static Vents Work

Static vents like the Round Back Static Vent utilize the Stack Effect to create efficient airflow. This phenomenon occurs when hot air rises; it accelerates up and out of the attic, bringing in fresh air from the soffit vents.

Installation and Maintenance

Installing passive roof vents is a straightforward process that homeowners or professionals can do. They can be installed on both new roofs and retrofitted on existing roofs. Consult the installation instructions provided by the manufacturer to maximize the vents' effectiveness. These static vents are maintenance-free, allowing you to enjoy the benefits of roof ventilation without any additional upkeep.

Frequently Asked Questions

If you have any questions about static vents, refer to the manufacturer's FAQ page for answers to common inquiries. However, if your question still needs to be addressed, you can contact the manufacturer's sales team for personalized assistance. They can be reached via email at [email protected] or by phone at 845-565-7770.


In conclusion, static vents are an excellent choice for roof ventilation. They provide efficient airflow, protect your attic from external elements, and are highly durable. With their versatility and adaptability, Round Back Static Vents can be installed in various climate zones and on different types of roofs. By utilizing the natural ventilation process of the Stack Effect, static vents effectively remove hot air and moisture from the attic, ensuring a healthy and well-ventilated space. Invest in static vents to maintain the integrity of your roof and promote a comfortable living environment in your home.

Calculate Round Back Vent Ventilation for given area

Enter below the Width and Length of the attic space you intend to ventilate. You may also enter the size of the attic directly in the "Area" field at the bottom.

Enter width of space to calculate area (or enter Area below)

Enter width of space to calculate area (or enter Area below)

If you know it, you may enter the area directly here

The diameter size of all roof vents determines the Net Free Area, also known as the "NFA". NFA is the measured amount of opening each vent offers at each specific size. to be available for venting air through a specific vent size. The calculator below will find the overall number of vents needed to effectively ventilate the targeted attic space.

Once you have the area, pulldown to select the specific vent diameter to show the number of vents of that size which would ventilate the specified area with both 1/300 and 1/150 rule.

*Please note
The roof vent calculation values shown above are for the exhaust portion of the roof. The same amount of net free air inches is needed for air intake as well. Proper roof ventilation consists of 50% air exhaust and 50% air intake.

UL Certificate of Compliance Active Ventilation Products Round Back Vent

Our Round Back Vents have UL Certification. Check out other details and specifics on UL Product IQ™ (Note: UL now requires you to have a free account to access this page) UL's Online Certifications Directory.

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