How Roof Vents Work

Ridge vents run along the peak of a roof.

How roof vents work.

Roof louvers gable louvers wind turbines and power attic ventilators are all visible exhaust vents that are mounted on the outside of your roof. Roof ridge vents do work well when there are soffit vents or box vents that help to draw air into the attic. Static vents are horizontal openings basically vent covered holes in the roof that allow air movement to take place. Hot air exhaust vents located at the peak of the roof allow hot air to escape.

Take for example ridge vents. Like ridge vents roof louvers and gable louvers work without the use of electricity. What are the cons. How to install roof vents.

Wind driven roof vents will pull more air from the attic but only when the wind is blowing. What kinds of roof vents are used. If there are more than one they are centered between the rafters and installed at regular intervals in a horizontal line along the roof. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents.

Why roof ventilation doesn t work specifically for cooling your home down. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. Non powered roof ventilation can move an almost insignificant amount of air. A few common types of vents used in roof ventilation systems include static vents ridge vents and gable vents.

Mark attic roof air vent locations. I have roof vents so i have roof ventilation. Now having said this the whole idea of connecting your home to your roof area to assist with controlling mold inside and extreme heat is a terrible idea for the following reasons. That means you have a lower risk of mold or mildew development.

If you were to install about 40 feet of roof ridge vent the area would span up to 10 turbines in this case 10 turbines would cost you substantially more to purchase and install. Wind turbines also work without a power source but they work best with a constant source of wind and are not as. You will also discover that this product can work by itself to release moisture from the house which is especially useful during the winter months. The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.

Roof vents will provide about half of the vent area and soffit vents the other half. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. However if you were only going to install 3 or 4 the turbines would be more affordable to you. Center nails between rafters 18 in.

Static vents come in a variety of different styles and sizes but are all non motorized vents installed near the roof ridge to allow for unobstructed flow of air from the attic.