Best Garage Door Seals for Extreme Weather

With hundreds of garage door weatherstripping options on the market, it can be hard to know which seal is best for commercial buildings and homes in areas with extreme weather. That’s why our experts have selected the top seals that perform well in all climates—from freezing Alaskan winters to scorching Texas summers. Read on to find the perfect seal for your needs.

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

If you’ve ever felt a draft under a shut door, you know that “closed” doesn’t always mean “sealed.” Even closed doors have small openings that allow pests, debris, and outside air to get inside. This airflow is caused by the “chimney effect,” where warm air rises and escapes at the top of a structure while cold air enters through the bottom.

This kind of air leakage increases your energy bills and reduces your home’s efficiency. Installing weather seals helps create a tight barrier between your garage and the outside, improving comfort and cutting energy costs. Homes in wildfire-prone or poor air quality areas can also benefit from keeping out dust and pollutants.

How Effective Are Weather Seals?

We offer high-quality weather seals from Action Industries that can stop up to 99% of air infiltration.

What Are the Best Garage Door Seals for Extreme Weather?

If you live in an area with harsh winters or intense heat, you need a seal that won’t crack, warp, or lose shape in tough conditions. Basic PVC vinyl seals tend to break down in these environments. Here are better alternatives:

EPDM Seals

EPDM (ethylene propylene diene monomer) is a durable synthetic rubber that performs well in extreme conditions. It handles temperatures from -50°F to 300°F. Its single-bond molecular structure resists UV rays and ozone better than other rubbers. EPDM is waterproof, flexible, low maintenance, and holds its shape over time.

Brush Seals

Brush seals are great for blocking drafts. The dense bristles form a flexible barrier that doesn’t hold water or freeze, making them perfect for cold climates. The bristles are securely attached to steel rods to prevent pull-out and ensure longevity. Brush seals are easy to install and work with most standard aluminum retainers. If you don’t have retainers, our brush seal kits include everything you need.

For a more budget-friendly option, try Flex Brush. It’s rust-proof, available in multiple sizes, and a great alternative to metal-backed seals.

WeatherBLOCK Seals

WeatherBLOCK seals combine EPDM and brush seal technology. The bristles block drafts, while the EPDM fin in the center adds extra protection. This two-in-one design is ideal for extreme weather conditions and provides twice the sealing power.

Need More Information?

Still not sure which weather seal is right for your garage? Our in-house experts are happy to help. Contact our support team for personalized recommendations and solutions.