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.
- Failed back surgery: New hope for patients living in pain
- Ticking time bombs: Telltale signs your water heater is about to explode
- Reading glasses could be a thing of the past
- 6 cool ways teachers are using technology in the classroom
- Emerging tech jobs in Phoenix and how to get one in 2017
- 4 top treatments athletes use for pain
- Emergency! What to do when bathrooms flood
- Operation Santa Claus needs holiday help
- This college bowl season is likely to be epic
- Arizona kids in crisis: How you can help
- 11 holiday classics for the ultimate movie marathon
- 2016 college football rivalry games you simply can't miss
- New treatment offers hope for migraine sufferers
- 11 stadiums to watch your favorite football team
- Shopping for a TV? Best models for 2016
- The new beer pairing guide for holiday foods
- Avoid this holiday plumbing disaster in your home
- 7 tips to avoid holiday weight gain
- New treatments mean better prostate cancer survival rates
- 5 of the scariest things found in drains
- 6 tips to create the best family movie night
- New bone marrow procedure holds promise for healing pain
- The best places to celebrate Fall in Phoenix
- Infamous athletes who did the most time for their crimes
- Diet, exercise and aspirin: 3 tools to fight colon cancer
- 2016 baseball highlights, bloopers and blunders
- See how CFOs really feel about business in the Valley
- The best television shows on the internet
- The 5 worst things you could do for your roof
- 6 coolest things brewing in Arizona
- 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