A Quick Guide to Roofing Ventilation

A proper roof ventilation system can prevent major roofing problems and help you get more years out of your roof. Local roofing company American Roofing & Construction, LLC takes a look at how ventilation works and what makes it an important roofing component.

Why Roofs Need Ventilation

Heat and humidity from indoor spaces naturally rise and end up getting trapped in the attic if the roof is poorly ventilated. This can lead to damage to roofing components like rafters, trusses and decking in the form of rot and warping. Moisture can also cause clumping in attic insulation, as well as encourage mold growth. A proper ventilation system can help maintain ideal temperatures and moisture levels in the roof and prevent such problems.

How Does Roof Ventilation Work?

A standard sloped roof has a passive ventilation system that consists of exhaust vents located at the highest point of the roof, which is usually at the ridges. It utilizes the natural rising movement of warm air to release it from the attic. The negative pressure created by this action pulls cool and fresh air through intake vents located at the lowest point of the roof, which is usually at the soffits, creating airflow.

Other Types of Roof Ventilation Systems

In addition to the ridge ventilation system described above, there are other options your trusted roofer may suggest to be more appropriate for your system.

• Turbine vents. Also known as metal pot vents, turbine vents are passive ventilation systems that work like ridge vents, but can release hundreds of cubic feet of air per minute. While turbine vents are more efficient than ridge vent systems, some people find the rotating onion-shaped metal turbines unflattering. The turbines also require more maintenance as the ball bearings need regular lubrication.

• Louvered vents. Also known as low-profile vents, louvered vents are another type of passive ventilation that features a raised enclosure made of galvanized steel or aluminum. These enclosures are typically installed on roofing slopes that face away from the curb.

• Powered vents. This is the only type of roof ventilation that uses mechanical means to cool the attic. Exhaust fans can be powered by connecting them to household electricity or from built-in solar panels.

American Roofing & Construction, LLC is a leading provider of high-quality roofing services in the area. Whether you require roof repair or replacement, our team is ready to get the job done right the first time. Give us a call at (251) 379-9712 or (205) 223-2469. You can also fill out our contact form to schedule an appointment.