Attic ventilation is a key component of your home's energy efficiency and longevity.
The overall purpose is to create air movement with the air coming in the soffit vents and then out the top. Soffit vents located near the eaves are the intake vents. While the hot air exhaust vents are located at the peak of the roof. When selecting an attic ventilation system remember no matter what system you are using do not combine exhaust vent types.
Jim's Favorite Hot Air Exhaust Vents:
1. Ridge Vents
2. Solar Powered Fans
3. Air Hawk
4. Whirlybird
5. Electric Powered Fans
The key is to have plenty of soffit vents - ideally continuous soffit vents. You typically want soffit vents 4 feet apart. There is no such thing as "too many soffit vents". Builders usually put them in every 8 feet, which is about half of what you need.
For every 150 square feet of attic space you need one foot of ventilation.
