Roof Ridge Vents: Pros and Cons of Mighty Air Circulation

Roof ridge vents are one of the most effective ventilation options for maintaining airflow. They prevent the growth of mold and mildew, ensuring a healthy indoor environment. However, comparing roof ridge vent pros and cons will show that, while effective, they’re not always the best choice based on the climate, roof design, age of the home, and other factors. Here’s how roof ridge vents excel and where they have room for improvement.

What Are Roof Ridge Vents? 

Roof ridge vents are a type of exhaust vent placed at the ridge of a roofline. Their location at the roof’s peak maximizes ventilation, but they have to be paired with soffit intake vents. Roof ridge vent installation costs vary based on the size and design of the roof, but on average, a ridge vent costs $500. 

They work best on new construction or new roofs, and you can install them on an existing roof, though leaks are more likely. Consult with a roofing company to determine whether roof ridge vents or another type of roof vent is the most effective option for your home.

Roof Ridge Vent Pros

If you’re considering roof ridge vents for your new or existing roof, consider the advantages of this ventilation option: 

Simpler Installation With New Construction 

If you’re building a new house or replacing your roof, roof ridge vents are simple to add to the construction plans. Roof vents can be installed on an existing roof, but the process increases the likelihood of leaks down the road.

Location Maximizes Venting

Roof ridge vents follow the entire roofline, reducing the chances of the attic developing hot or cold spots. The location also makes them an option for cathedral ceilings, which don’t always leave much attic space.

Blend With the Roofline

Roof ridge vents seamlessly blend with the roofline, creating a visually appealing exterior. Unlike box vents or off-ridge vents, which protrude from the roof in regular increments, you may not notice a roof ridge vent. 

Passive Venting

Passive venting saves money and energy because it doesn’t require electricity to power a fan or turbine that pushes or pulls air through the attic. Roof ridge vents (exhaust) work in conjunction with soffit vents (intake) to allow air to naturally move through and out of the attic. 

Cons of Roof Ridge Vents

With the pros in mind, carefully weigh the cons of this roof ventilation system: 

Poor Performance in Extreme Temperatures 

Roof ridge vents often struggle to function effectively in cold climates, where they can become blocked by snow and ice. A blocked vent traps heat and moisture, which can lead to mold and mildew and make the roof more susceptible to leaks. 

Poor Performance on Low-Pitch Roofs

Low-pitch or low-slope roofs don’t have enough slope to create the airflow needed to properly vent an attic. As a result, roof ridge vents aren’t as effective on low-pitch roofs. 

Difficult Installation on Existing Roofs

Roof ridge vents have to be installed along most, if not all, of the ridgeline. Adding roof ridge vents to an existing roof requires removing and replacing existing components and is time-consuming. When only a portion of the roof is reinstalled to accommodate the new vents, the roof is at risk of damage and leaks. 

Require Intake Vents

Roof ridge vents are exhaust vents from which air can leave the attic. To function as they should, you’ll need to install intake vents in the soffits. Installing two types of vents increases the price of the project and the chance of complications. 

Prone to Leaks

Over time, the large surface area of roof ridge vents makes them more prone to developing leaks. You can prevent this by doing a visual check from the roof and inside the attic. Look for roof leaks, sagging areas, and tiles or shingles shedding from the roof. 

Alternatives to Roof Ridge Vents 

There are several types of roof vents, and some are better suited to specific roof designs than others. The pitch, surface area, and roof design all influence the type of ventilation that works best.

Contact a professional if you’re considering installing roof ventilation. A local roofer can advise you on whether a roof ridge vent or an alternative type of roof ventilation would be more suitable for your attic and roof design.

Are Roof Ridge Vents Right for You?

Your roof design, the climate, and your budget all play a role in determining whether roof ridge vents are right for you. Keep in mind that roof ridge vents are easier to install on a new build than they are to add to an existing home. 

These vents can be a good option for homes with high ceilings and climates where temperature extremes are rare, but they might not be as effective on low-pitch roofs, and they require an adequate amount of intake vents. Your roofer can help you determine which ventilation options are most ideal for your roof specifications and your home.