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How does a roof vent work?
What is a roof vent?
What is a roof ventilation system?
Why does a roof need a vent?
Jan 15, 2024 · Roof venting uses air pressure to remove heat from the attic, which keeps your home comfortable. An attic not venting well can cause condensation, damage the roof structure, cause mold to form in the attic, and eventually spread throughout the house. The best roof venting is a combination of soffit vents and ridge venting.
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Jun 29, 2023 · A roof ventilation system is an essential part of your roof that allows outdoor air to pass in and out of slots in your attic. To make sure things don’t get too hot and humid upstairs, roof vents control the flow of air by bringing fresh air into the attic and pushing out hot air.
- Whirly Bird or Wind Roof Turbines. What Is It: Whirlybird or roof turbines are large, wind-driven, bulbous vents on the roof apex. They have thicker base plates and curvilinear openings that spin with the wind and expel all the hot air from the system.
- Static or Solar Powered Vents. What Is It: Static or solar-powered vents are flat, squarish, or circular discs on the roof sides. These are directly connected to different solar panels and have a slightly sloping edge to maximize sun exposure.
- Dormer Vents. What Is It: Dormer vents are round, vault-like vents with meshed screens and rounded edges that fit along pitched roof sides and apexes.
- Ridge Vents. What Is It: Ridge vents are a type of slit vent at the roof apex. These usually sit between/over the roof gaps and offer a continuous exhaust along the entire roof’s length.
In a hot climate, the primary purpose of ventilation is to expel solar-heated hot air from the attic or roof to reduce the building’s cooling load and to relieve the strain on air-conditioning systems. In mixed climates, ventilation serves either role, depending on the season.
- Joseph Lstiburek
Aug 3, 2021 · Roof vents form the base of your attic ventilation system. They let your attic breathe—and they help protect your roof system from damaging heat and moisture. Here's how two important types of roof vents work and what benefits they can bring your house.
How Do the Vents Work Together? Like we mentioned above, your roof requires both intake vents and exhaust vents to work properly. The intake vents are most often near the bottom of your roof or attic, with the soffit being the most common place.
Jan 22, 2024 · Roof ventilation is based on the simple fact that warm air rises. In summer, the sun heats air in the attic. In winter, heat from your home warms attic air. In either season, good venting occurs when cool air can enter the attic near the eaves and exit near the peak.
