Proper attic ventilation plays a major role in the health and longevity of your roofing system. One of the most important components of that ventilation system is the ridge vent. While many homeowners assume all ridge vents perform the same, there is a significant difference between filtered and unfiltered ridge vents. Choosing the right one can protect your home from moisture damage, pests, and long-term structural issues. At ABJ Roofing, we install CertainTeed filtered ridge vent systems because they provide superior performance and protection compared to unfiltered alternatives.
What Is Ridge Vent?
Ridge vent is installed along the peak of your roof. Its job is to allow hot, humid air to escape from your attic. When paired with proper intake ventilation such as soffit vents, it creates a continuous airflow system that regulates attic temperature and moisture levels. Without proper ventilation, heat and humidity can build up inside the attic, leading to premature shingle deterioration, mold growth, wood rot in the decking, increased energy bills, and ice dam formation during colder months. But not all ridge vents are built the same.
The Problem with Unfiltered Ridge Vent
Unfiltered ridge vents are essentially open ventilation channels. While they allow air to escape, they do little to prevent outside elements from entering the attic. Common problems with unfiltered ridge vent include wind-driven rain entering the attic, snow infiltration during storms, dust and debris buildup, insects and small pests gaining access, and reduced long-term performance due to clogging. Over time, this can lead to insulation damage, moisture stains on decking, and even interior ceiling leaks.
Why Filtered Ridge Vent Is the Better Option
Filtered ridge vent systems are designed with an internal weather-resistant filter that blocks unwanted elements while still allowing consistent airflow. At ABJ Roofing, we install CertainTeed filtered ridge vent because it provides a higher level of protection compared to standard unfiltered options. The built-in filter helps prevent wind-driven rain and snow from entering the attic, reduces the risk of insects and small pests getting inside, and limits dust and debris buildup along the ridge. At the same time, it maintains balanced ventilation so heat and moisture can properly escape. This combination of protection and performance results in a cleaner, drier attic space and helps extend the overall lifespan of your roofing system.
How to Check If You Have Filtered Ridge Vent
Homeowners can perform a simple visual inspection to determine whether they have filtered ridge vent installed.
Step 1: Go Into Your Attic
On a clear day, look up toward the peak of the roof where the ridge line runs.
Step 2: Look for the Vent Opening
You should see a narrow opening along the ridge where daylight may be visible.
Step 3: Check for the Filter Material
If you have a filtered ridge vent, you will see a visible mesh or filter material along the ridge opening. It may appear as a dark or fibrous strip running continuously along the peak.
If you can see straight daylight with no visible material, or it appears to be an open gap with no barrier, you likely have unfiltered ridge vent.
If you are unsure, we can inspect it for you and let you know exactly what type of ventilation system you have.
Why This Matters for Your Roof
Your attic ventilation system directly impacts the life of your shingles and the structural integrity of your home. Installing a quality filtered ridge vent system, such as CertainTeed’s, is a small upgrade that provides major long-term benefits. It helps extend roof lifespan, protect insulation, reduce moisture-related repairs, improve overall home energy efficiency, and prevent avoidable leak issues.
If you suspect ventilation problems or are planning a roof replacement, we at ABJ Roofing can evaluate your current ventilation system and recommend the best solution for your home. Proper ventilation is not just a detail. It is one of the most important components of a healthy roofing system, and we make sure it is done right.
