Types of Roof Ventilation Systems

Proper ventilation plays an important role in the function and longevity of your roof. Ventilation is also necessary for a comfortable and energy-efficient home. Without adequate air circulation, your roof could be at risk for deterioration, ice buildup, leaks, or mold growth. Studies indicate that many American homes suffer from inadequate roof ventilation. There are many different types of ventilation systems available to protect your roof and improve the energy efficiency of your home—keep reading to learn more about your roof ventilation options in Alexandria, Fairfax, and Bethesda.

Ridge and Soffit Vents

Ridge vents are a common design used in peaked residential roofs. A ridge vent runs the entire length of the roof at the peak and blends naturally into the look of this structure. Ridge roof vents are simple systems with no moving parts; they are typically combined with undereave venting, called soffit vents, to create a complete system that moves air into and out of your attic. Air is drawn in through the soffit vents and expelled through the ridge vent via convection to maintain a cooler, moisture-free attic and protect your roof.

Box Vents

Box vents are a type of low-profile roof vent that form a low, box-like structure on your roof. A box vent is placed directly above a hole cut in your roof to allow air to flow up through the vent. Like ridge vents, box vents are passive systems that incorporate no moving parts. These vents also work best in combination with soffit vents to draw air up into the attic for better circulation. Because box vents are typically small, you may need to install many box vents over the surface of your roof to provide enough ventilation; however, these vents can be installed in any location on your roof for convenience or aesthetics.

Wind Turbine Vents

Wind turbine vents, sometimes called rotary vents, incorporate a moving system of vanes. Although a wind turbine vent doesn’t need the wind to work, this type of vent will draw more air up and out of your attic when the wind is blowing for increased efficiency. When there is no wind, a wind turbine vent acts just like a box vent, allowing hot air to escape from your home passively through a hole in your roof. Wind turbine vents have a slightly larger profile than box vents, but you may need fewer of them to achieve the ventilation you need because they can be more efficient.

Power Ventilators

Power ventilators incorporate motor-driven fans to actively draw hot air and moisture up out of your attic at any time. These vents can be tied into your home’s electrical grid or installed with a solar panel to provide natural power to each unit. Power vents may incorporate temperature and humidity sensors, which prompt them to activate when conditions in your attic indicate that ventilation is needed. These types of vents look much like box vents, but fewer vents may be required overall due to their efficiency.

Do you know if your home’s roof incorporates the ventilation it needs for efficiency and longevity? Visit our website today to reach an experienced roofing contractor in your area for more information about the needs of your residential roof, including maintenance, repair, and new roof or ventilation system installation.