What Is A Ridge Vent On A Roof

What Is A Ridge Vent On A Roof, How Does It Work & Why Do You Need One

Ridge vents are a popular method of keeping your roof leak-free, but the ridge vent definition can be tricky. What does a ridge vent do? Ridge vents act as an air exhaust vents on top of the roof. These vents provide continuous exhaust ventilation at the highest portion of the attic and help resist rain or snow. However, installing a ridge vent can be complicated. An air lot is cut in the roof deck at the peak. The ridge vent is then directly installed into the air slot. While you can do it yourself, it’s better to leave the installation of ridge vets to professional roofing services

How do ridge vents work? If so, how does a ridge vent work, and why do you need one? We will answer all these questions and more below. Continue reading to find out. 

The Main Types of Ridge Vents

There are several different types of ridge vents available, depending on the type of material used. When you look for a roof ventilation system, you will notice that the contractors propose the same ventilation solution for every roof type. However, only some roofs are ideal for the same ridge ventilation system. Below are the two best types of ridge vents that you can use. 

Shingle-over Vents 

A shingle over the vent is a ridge venture placed over the ridge and coated by an asphalt shingle cap. The cap completely encompasses a shingle ridge vent. Once the installation is complete, you only see the cap. 

Aluminum Vents 

An aluminum house ridge vent consists of a mushroom shape that is integrated with a wide flange on both sides and sits on top of the roof shingle. A sealant is used and re-applied regularly as part of roof maintenance to prevent leaks. 

Of the two types, there is no winner over the best type of ridge vent, as both circulate the same amount of air. The main difference between the two types is the aesthetic and the maintenance required by them. 

A new roof covered by ridge caps for better ventilation; ridge vent roofs allow air to pass through

Now that you have your answer on “What are ridge vents on a roof?”, we can move on to the working principles of ridge vents. 

How Do Roof Ridge Vents Work: The Principle 

If you are a curious person by nature, then you might be wondering what a ridge vent looks like from the inside and how do roof ridge vents work. Well, we can appease your curiosity. 

The principle behind how the ridge vent works are simple. Ridge ventilation creates a circulation of airflow along the roof deck underside, along which the air moves. This airflow is continuous and uniform, maintained by two working principles. 

First, hot air rises and exits the ridge vent from inside attic, causing cool air to gush from below. Second, a “venturi effect,” or a negative pressure, is established by the positive airflow through the ridge. The effect pulls air out of the ridge vent and brings cool air from the soffits venting below. 

Therefore, the attic is aired during windy weather by a constant flow of cool and dry outside air. However, are ridge vents beneficial? Let’s find out. 

What are the Benefits of Ridge Vents?

Before you decide on getting a ridge vent, you must find out why you need one. A ridge vent roof protects your home and roof from damage. The ridge vents allow the damp and warm air that collects in the attic to break out. If you are still wondering, “Why do I need a ridge vent?” below are the three main benefits you can expect from installing ridge vents. 

Attic Ventilation 

A ridge vent on house can produce functional ventilation in an attic, guaranteeing fresh air circulation. Since moisture and heat accumulate in the attic, the area is prone to mold and mildew in various areas. The ridge vent can help remove moisture and heat and prevent mold growth. 

Airflow Throughout the Roof 

Installing ridge vents enable proper airflow at the peak of the home and below the roof, providing uniform airflow throughout the roof. Before you install a ridge vent, or are planning on a roof replacement, have a roofing contractor confirm that they will function properly to provide sufficient airflow.

Roof Longevity and Performance

Ridge vents on house give additional protection against several roofing problems and roof damaging factors. The moisture accumulation on the roof can lead to leaking and water damage, and without sufficient fresh air to remove the moisture, the roof and attic become susceptible to rot. Moreover, ridge vents can prevent overheating in the attic. 

Why Does a Roof Need to Be Vented?

Ventilation is crucial to enhance the air conditioning of the house's attic, basement, or upper floor, which can become overheated in the summer. Roof ventilation helps cool the roof, reduce metal expansion, prevent the aging of shingles, and save your home and you from suffering in the heat. 

A ridge ventilation system allowing the air to move around to get rid of the excess moisture

However, does a roof need to be vented in the winter? Yes! In winter, ridge vents help keep the roof cool and prevent the snow from thawing off the roof and freezing in the rain gutters, which could lead to water damage and leaks. 

Generally, contractors use the 1:300 rule for residential attic ventilat. The 1:300 rule states that there needs to be a square foot of ventilation for every 300 square feet of space. 

Wondering how to install ridge vents? A professional contractor can help you install a ridge vent for proper functioning. Years of experience and proper tools make the installation process a breeze. But you should understand how to tell if your ridge vent is installed properly to prevent damage to the vents or surrounding area. These are the steps involved in ridge vent installation:

  • Remove the Shingle Caps
  • Cut the Ventilation Opening
  • Install New Field Shingles
  • Install the Ridge Vent

Call Otis Roofing For Your Ventilation Needs & More

Otis Roofing, LLC offers a variety of home enhancement services, including but not limited to roof ventilation. We serve homeowners with dutiful diligence and always leave the best impression. Call us or fill out our contact form to request an accurate and fair quote.