Attic Ventilation

Proper attic ventilation is a necessity to prevent excessive moisture build-up from condensation in the winter, and preventing excessive heat build-up in the summer. Both conditions can impact the life of your roof and the comfort of your home. High attic temperatures, even with proper insulation, can result in a home that is unnecessarily hot in the summer, and difficult to cool.

For typically pitched attics, the requirement is one square foot (net free area) of ventilation for every 150 square feet of attic floor area, with half of the ventilation high, and half low. This, however, does not guarantee an adequately vented attic. It is important that vents are properly located and installed to insure proper ventilation.

Installing vents at both eaves and ridges allow a “chimney effect” to promote the movement of air up and out of the attic. Eave vents alone will keep heat and moisture trapped in the attic.

The best time to address attic ventilation issues, of course, is when installing a new roof. For existing problem attics, however, ridge or eyebrow style vents can be retrofit into an existing roof system.

Attic exhaust fans are an easy and affordable way to clear hot air from an attic when it is most needed. These are available as line voltage fans with thermostat controls to turn the fan on when the attic gets hot, and turns it off when the temperature drops approximately 15 degrees. For homes with the proper exposure, we have solar powered fans that operate whenever the sun shines on the built-in or remote solar panel.

Please contact us to provide your attic ventilation solution.

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