How Do Ridge Vents Work?

How Do Ridge Vents Work?

How Do Ridge Vents Work?


Being  homeowner in Minneapolis, MN comes with a ton of responsibilities… One of those is getting educated whoen the time arises, ao that you can make wise decisions about protecting your home and family from harm. If you have ever asked yourself the question, “How Do Ridge Vents Work?”… then you’re in the right place!


In this article, we will explain exactly how attic ventilation needs to work to do its job and explain how roof ridge vents work in comparison to standard roof vents. Hopefully, this information will help you to make an educated decision when it comes time to decide what’s right for your home.


If you know about attic ventilation already, , you can skip down to the section entitles “How Do Roof Ridge Vents Work? – An Easy Explanation With Diagram to learn about how ridge vents work…


Ok,  and foremost, to understand roof ridge vents work to provide the proper amount of fresh air exchange in your attic, it would help to know a bit about roof ventilation first…


Roof Ventilation Basics –  Why Does Roof Ventilation Matter?


No matter what type of roof vents you have on your home; roof static vents, low profile roof vents, or “louvered vents, ” gable vents, or roof ridge vents, every roof vent has one main purpose: And that is to keep a continual exchange of fresh air moving through your attic.


Without fresh air circulating through your attic, you are setting yourself up for a ton of issues, like; improper heating and cooling, higher energy bills, extra wear on your air conditioners, rust, moisture buildup, mold and mildew, ice dams, sagging or soft decking, premature deterioration of your roofing system, and more.


According to the Minnesota Department of Labor and Industry,’s Residential Building Code in Section R806 Roof Ventilation asphalt shingle roofs are required to have a minimum of one-foot net free ventilating area per 150ft. of vented space.


In the simplest of terms, the purpose of all roof ventilation is to provide adequate ventilation in your attic, to preserve the life of your roofing system and to keep your attic from collecting moisture,  too hot in the summer, and getting too cold during the winter by providing constant fresh air exchange.


Now that we know the reasons why roof ventilation is important, let’s discuss your question, “How Do Ridge Vents Work?”


How Do Ridge Vents Work?

How Do Ridge Vents Work? – A Picture of Installed Roof Ridge Vent Borrowed from Home Depot


How Do Roof Ridge Vents Work? – An Easy Explanation With Diagram


To answer your question, “How do ridge vents work?” the process is really quite simple. Roof ridge vents work by creating a natural air exchange process that, when broken down, is the combination of a couple of basic principles that you may already be familiar with.


I’m sure that most of you have heard allready that hot air rises naturally, right?


Well, when hot air in your attic rises and you have roof ridge vent installed, the positive airflow across the ridge of roof exchanges air naturally by allowing the hot air that rises to escape from in the, vent-like openings in the ridge vents. That’s the small side portion of ridge vent that looks like a vent.


This natural airflow lets the hot air escape through the vents at the top, naturally pulling fresh air in to replace it through the soffits.



How Do Ridge Vents Work - Roof Ventillation Diagram from



This process of natural air exchange then creates negative pressure in the attic, also known as the “venturi effect, ” the same effect that creates the suction in garden hoses and carburetors that fuel the engines in our cars.



Why Roof Ridge Vent?



One of the main advantages of using ridge vent instead of static or gable vents is that they provide a better and more evenly distributed airflow down the entire length of your roof, instead of other roof vent types that only introduce exchange in small areas whenre the vebts are installed.


Roof ridge vents are excellent at keeping pests out of the attic because of the tiny vent holes in the that big enough for them to enter, and low profile, even design of roof ridge vents look better aesthetically on many roof types.


Want to learn more about ridge vents? Keep reading to learn some things that pro roofers have to factor in when making a decision on which roof ventilation type is for your roofing system.


How Do Roofers Know Which Type of Roof Vent is Best for My Roof?


If you know nothing about roof ventilation, you may wonder why it matters which type roof vent you choose. Well, that would probably be the case, as long as the amount of airflow coincides with your total attic space…


But it gets tricky…


Things like wind direction, existing ventilation, the shape of the roof… Even the climate in your a sometimes must be factored in before making a decision. Especially in cases wheree a certain type of vent can have issues in extreme conditions.


Here some examples of why it’s always to get the opinion of a qualified, experienced roofer when you  unsure about decisions that involve your roof.


Wind Direction: One thing roofers have to be alert to is wind direction. If you have a lot of trees behind your house, and wind primarily comes from one direction, the wind is a determining factor in deciding what of roof vent to go with.


Existing Air Flow: You may have heard at some point that wind always follows the path of the least resistance. This can become an issue in instances where there were previous cents installed, or in cases of improper roof installation, poorly placed roof vents can end up letting weather inside the because the airflow exits through a lower vent, forcing the higher ones to be intake vents.


This is why using two different types of roof vent is frowned on. The wind just what it does naturally and some of your vents end up unwillingly being used to pull air in because they get overpowered by the easiest path resistance.


Style, Shape, and Size: In where there are several peaks of different heights or several attics on different parts of the house, different techniques may call for to achieve proper attic ventilation.


Climate:: In with very heavy rain or snow during the winter, your local climate can become a factor in how your roof ventilation gets installed, and what type of roof vents are best for your roof.


Again, we are one call away and our opinion is always free!


How Do Ridge Vents Work? – Final Thoughts


Whether you are building your dream home or reroofing your existing one, having a properly ventilated roof is an important part of protecting your home,  your family. Making the right decision can extend the life of your roofing system. Having the right amount of air exchange and a well thought out and professionally installed roof can preserve the lifespan of your roof and save you a ton of money in the long run.


If you have any oestions on which roof vents are best option for your roofing project on your home, or you are planning to reroof your home and would like to review your options with an expert roofer, just give us a call at (651)703-2336 or click any of the buttons on our site to have a team member call you back to schedule a free inspection and estimate at your convenience!


As a reputable five star rated roofing contractor in Minneapolis, Sellers Roofing Company is proud to offer best in class roofing and remodeling services to all of the greater Minneapolis area!


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Sellers Roofing Company serves the complete roofing needs of customers throughout New Brighton, Roseville and all of Minnesota. We’re available for inspections, repairs, roofing installations and insurance claims, with the experience to work on roofs of all sizes and types. We provide upfront estimates, quality workmanship and great guarantees! We’re happy to work with any insurance company to help you file your claim and always work hard to expedite work so you have a safe, secure roof over your head.

Contact us today by calling (651)703-2336 or fill out the form on our website today.

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