What is Roof Venting & What Does a Roof Vent Do?
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Roof Venting refers to the system installed in your roof structure that allows air to circulate in and out of your attic or roof space. The primary goal of roof venting is to regulate temperature and moisture levels inside the attic, which helps maintain the structural integrity of your home and improves energy efficiency.
What Does a Roof Vent Do?
A roof vent performs several important functions:
1. Regulates Attic Temperature
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In summer: It allows hot air to escape from the attic, reducing the load on your air conditioning system.
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In winter: It helps keep the attic close to the outside temperature, preventing snow on the roof from melting and causing ice dams.
2. Reduces Moisture Build-Up
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Everyday activities like cooking, showering, and using appliances generate moisture. If this moist air rises and gets trapped in the attic, it can lead to:
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Mold and mildew growth
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Wood rot and damage to insulation
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Reduced lifespan of roofing materials
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3. Improves Energy Efficiency
By keeping the attic cooler in summer and preventing moisture damage in winter, roof venting reduces your HVAC workload and energy bills.
4. Extends Roof Lifespan
Trapped heat and moisture can accelerate the deterioration of roofing materials. Proper venting helps preserve shingles and other components, extending the life of your roof.
Types of Roof Vents
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Intake Vents – Usually installed at the roof's edge (e.g., soffits); they draw in cool, fresh air.
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Exhaust Vents – Located near the roof peak; they let hot, moist air escape. Common types include:
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Ridge vents
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Box vents
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Turbine vents
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Power vents (fan-assisted)
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Conclusion
Roof venting is essential for a healthy home. It protects against temperature extremes, moisture damage, and premature aging of roofing materials. Whether building new or renovating, ensuring proper roof ventilation is a critical step in maintaining home performance and comfort.