How Roof Vents Work

Hot air exhaust vents located at the peak of the roof allow hot air to escape.

How roof vents work.

Roof vents will provide about half of the vent area and soffit vents the other half. Drive nails up through the sheathing and shingles to mark roof air vent locations. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. Like ridge vents roof louvers and gable louvers work without the use of electricity.

While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. If there are more than one they are centered between the rafters and installed at regular intervals in a horizontal line along the roof. Wind driven roof vents will pull more air from the attic but only when the wind is blowing. Roof louvers gable louvers wind turbines and power attic ventilators are all visible exhaust vents that are mounted on the outside of your roof.

That means you have a lower risk of mold or mildew development. From the roof s peak. A few common types of vents used in roof ventilation systems include static vents ridge vents and gable vents. Center nails between rafters 18 in.

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. I have roof vents so i have roof ventilation. 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. What are the cons.

However if you were only going to install 3 or 4 the turbines would be more affordable to you. But the ridge vent maintenance and running cost is a lot less than for turbines when. Ridge vents run along the peak of a roof. How to install roof vents.

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Non powered roof ventilation can move an almost insignificant amount of air. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents. Roof ridge vents do work well when there are soffit vents or box vents that help to draw air into the attic.

Wind turbines also work without a power source but they work best with a constant source of wind and are not as. What kinds of roof vents are used. 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. Mark attic roof air vent locations.

Take for example ridge vents.