First, let’s look at the kinds of roof vents.
Louvers are covered openings that allow air to escape the attic. They are located on the gable (non load-bearing) ends of the house and allow limited airflow. This system relies on wind direction to create airflow through the attic. When the wind blows perpendicular to the ridge, it circulates air around the louver, which acts as it own intake and exhaust vent. If the wind blows parallel to the ridge, the airflow pattern acts as a draft that moves in one louver and out the other.
Fans draw air through the attic by creating an air flow. They are effective, but they don’t allow natural forces to ventilate the attic. Plus, it’s somewhat expensive to buy, install and operate power fans, a cost that is greater than the fans’ benefit. Fans do not create airflow over the roof sheathing. Even fans that automatically turn on and off at selected temperatures are not worth the investment because the summer heat in the attic will cause the fan to run almost continually.
Mounted along the top of the ridge, ridge vents provide even, consistent exhaust ventilation. Run a ridge vent the entire length of your attic. Some roofers cut costs by running only the length required by code. Rosie recommends running the vent from roof end to roof end for best results. A ridge vent won’t work well alone; adequate intake ventilation must accompany the ridge vents in order to maintain airflow.
A common method of ventilation, soffit vents are located under the eaves, where they will have minimum exposure to rain and weather. Soffit vents on each side of the structure create equal ventilation on both sides. Soffit vents should not be your home’s only vents, though. If they are, the air movement is restricted to the attic floor, and air flow does not pass over the roof sheathing.
Also called whirly birds, turbine vents are wheels mounted near the ridge of the roof. You generally install two or three per roof. Most of the time, they act as exhaust vents, but air also can enter the attic through a turbine. Turbine vents are not effective, as they only exhaust small portions of the roof, and they allow rain to enter the attic.
Rosie’s recommendation: Ridge vents accompanied with soffit vents will create the most effective attic ventilation for your home. The combined system will draw air from the soffits along the sheathing and exhaust it through the ridge vent.
- Skin Cancer in Arizona: Stats, facts and new immunotherapy drugs making strides
- Caring Crisis: Rising tide In Alzheimer’s disease leads to shortage of caregivers
- Distracted walking injuries end up not so funny
- Scary situations: 5 quick tips before you let a contractor in your home
- Four ways telemedicine is changing the health care industry
- 5 mistakes homeowners make in the spring
- Three rivers run through it: Exploring Arizona's waterways
- Smart home basics: things you need to know to get started
- 5 Surprising things causing back pain
- Arizona agriculture is a $17.1B industry
- Timeline: Arizona's roots in brewing history
- 5 reasons to love the D-backs this season
- Tips for taking your home entertainment experience to the backyard
- Tech-related injuries your parents never experienced
- Workers comp: Signs your co-worker could be a fraud
- Who's the real founder of America's pastime?
- Epidemic rising? What you need to know about Alzheimer's in Arizona
- 5 unforgettable Wooden Award winners
- Family and hard work are keys to success of modern dairy farmers
- Genetic testing could hold answers for colon cancer survival
- Cold beers and baseball: A beer lover's guide to Spring Training
- Telecommuting: 5 tips to make it work for employers and employees
- See how top CFOs feel about economic growth in the Valley
- Migraine myths that keep patients from effective treatments
- Here’s why Gaydos went tankless with his water heater
- Bocce ball and basketball: How you can help Arizona's Special Olympics athletes
- Tips on building the best wine room in Arizona
- Avoid the nightmare: 6 tips to choose a great contractor
- Breast cancer: Improved testing and treatments means more survivors
- Failed back surgery: New hope for patients living in pain
- December's Rosie-do list: It's time to get ready for the Arizona winter
- November's Rosie-do list: Time to get ready for the holidays
- October's Rosie-do List: Keep your home running smoothly this month
- September’s Rosie-do list: Get your veggies, trees and yard ready for fall
- August’s Rosie-do list: Fix the monsoon issues, get ready for fall
- July's Rosie-do list will help you fight bugs brought on by the monsoon
- Ready your home for monsoon season with June's 'Rosie-do' list
- Eight things for homeowners to add to their 'Rosie-do' list for May
- 6 to-do items for your April 'Rosie-do' list
- Your 'Rosie-Do List' for March: Time to start gearing up for summer
- Rosie-Do List for February: Get outdoors to prepare for spring
- Here’s your ‘Rosie-Do List’ for January