How to Improve Attic Ventilation

Improved air circulation in the summer months will help remove hot air and reduce the temperature of your attic.  Keep in mind that while proper maintenance of fan equipment to vent the attic is critical to optimal performance and longevity.

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Poor attic ventilation makes your air conditioner work harder, leads to condensation in the attic, and reduces the lifespan of your roof. Fortunately, there are numerous ways to improve attic ventilation, some of which are quite inexpensive and manageable DIY projects.

Attic Ventilation Fundamentals

All efforts at attic ventilation make use of the fact that hot air rises. The goal is to allow hot air to escape from the top of the roof, which is greatly aided if measures are taken to allow cooler air to enter from below. Many options for improving attic ventilation encourage the natural flow of hot air toward the top of the roof and out in some way. Fans, whether solar or electric, are another option.

General recommendations are to have one square foot of vent space per 150 square feet of attic space. The vent allowance should be evenly split between intake vents at the bottom of the roof and exhaust vents near the top of the roof and should be evenly distributed in both areas.

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