Best Garage Door Seals for Extreme Weather  

With hundreds of types of garage door weatherstripping options on the market, it can be hard to tell which seal is best for commercial buildings and homes located in climates susceptible to extreme weather. That’s why our experts have picked out the top seals that excel in a variety of climates from an Alaskan winter’s chill to a blistering Texas summer. Read on to find the perfect seal for your specific needs. 

Why Do You Need a Weather Seal for Your Garage Door? 

If you’ve ever felt a breeze drifting through the bottom of a shut door, you know that being shut does not equate to being sealed. Even when closed, doors have small openings that pests, debris, and air can infiltrate. Air leakage is the result of the "chimney" or "stack" effect, where hot air rises and exits through openings around the top of a building and cold air enters through the gaps and openings near a building’s bottom. The loss of heated and cooled air can result in higher utility bills, which no one wants! Weather seals create a barrier to seal off these problem points and cut energy costs for homeowners by creating a tight seal between a home and the outside world. Areas affected by wildfires and poor air quality can especially benefit from weather seal installation. 

How Effective Are Weather Seals?  

We offer high-quality weather seals from Action Industries, which can stop up to 99% of air infiltration. See the chart below:

What Are the Best Garage Door Seals for Extreme Weather? 

If you live in areas with extreme cold or heat, you need a seal that won't crack, stick or let in drafts during poor weather conditions. Less expensive seals like PVC vinyl will more easily lose their shape in extreme climates and are not recommended for intense environments, but we have a few alternatives for enduring harsh weather: 

EPDM Seals 

EPDM (ethylene propylene diene monomer) seals are made with ultra-durable synthetic rubber that has a temperature range of -50 to 300 degrees Fahrenheit. The rubber material's single-bond molecular structure makes it more difficult for UV rays and ozone to break apart than double-bond rubbers. EPDM rubber is low maintenance and has an excellent rating in weather resistance, ozone resistance, and heat resistance. This flexible waterproof rubber is also known for holding its shape over time.

Brush Seals 

Brush seals are more effective at keeping out drafts than a typical rubber bottom seal because of the barrier the bristles create when they spread. These bristles do not retain water and won’t freeze at sub-zero temperatures for additional protection. Brush seal bristles are made with filaments wrapped around steel rods to prevent pull-out, ensuring long-lasting quality. They are also easy to install for DIY home improvement and will fit most of your existing standard aluminum retainers. If you have no retainers, our brush seal kits include everything needed for installation, including retainers. 

We also carry Flex Brush as a convenient, money-saving alternative to traditional metal-back brush seals for those who need protection on a budget. Flex Brush comes in multiple sizes and won’t rust as an additional bonus.

WeatherBLOCK Seals 

WeatherBLOCK combines the strengths of EPDM and brush seals by having the bristles of a brush seal with an EPDM fin inserted in the middle. This 2-in-1 design gives twice the protection for whatever extreme weather blows your way. 

Need More Information? 

Please ask! Our in-house experts are ready to answer your seal questions and recommend the best seal to solve your problem. Connect with our support team: 

• Call: 800-783-6112 
• Email: support@northshorecommercialdoor.com