When it comes to windows and doors, energy efficiency is a top priority in modern construction. One of the most effective ways to improve insulation and thermal performance is to use thermally broken systems.
This advanced technology significantly reduces heat transfer, improving comfort and reducing energy costs in homes and commercial buildings.
Don’t know what our thermally broken system is? Here, we’ll tell you all about it and why you should add it to your project.
What does Thermally Broken System mean?
The thermally broken term refers to a window or door frame that includes an insulating barrier between its inner and outer sections. This barrier, usually reinforced, helps minimize the transfer of heat and cold through the frame, significantly improving the energy efficiency of the window.
Likewise, this reinforcement between the frames prevents outside temperature changes from affecting the inside.
How the Thermally Broken System Works
In traditional systems, heat and cold pass easily through the material, making it a poor insulator. This causes heat loss in winter and heat gain in summer, reducing the efficiency of even high-performance glazing.
Thermally broken systems include an insulating strip that separates the inner and outer profiles, forming a thermal barrier. This band drastically reduces heat and cold conductivity, helping to maintain a stable interior temperature.
Combined with double glazing or low-emissivity glass, thermally broken systems provide superior insulation, reducing the need for excessive heating or cooling, and are a great ally for the environment.

Why is the Installation of a Thermally Broken System Important?
In addition to looking stylish by combining glass or aluminum (like Storefront systems), thermally broken systems are important for virtually every type of project. Here are 5 reasons to consider them.
- Reducing heat loss and heat gain: Up to 49% of a home’s heat loss in winter escapes through windows. In summer, 87% of the outside heat enters through untreated windows and something similar happens in winter. This is significantly reduced with thermally broken systems.
- Lower energy costs: By maintaining a stable indoor temperature, thermally broken systems help reduce reliance on heating and cooling systems, resulting in lower energy bills.
- Increased comfort and prevention of condensation: Thermally broken systems can prevent condensation buildup, resulting in no mold and mildew and interior damage to the interior. It also improves indoor air quality and protects your home from moisture-related problems.
- Increased durability and strength: These systems can be anodized or powder coated for added durability, making them resistant to UV exposure, salt corrosion and extreme weather conditions. Ideal for harsh climates, they maintain their performance over time.
- Environmentally friendly and sustainable: By reducing energy consumption, thermally broken systems help reduce the carbon footprint, making it a sustainable option for green buildings. They contribute to meeting modern energy efficiency standards and certifications.

PRL Glass Offers the Best Thermally Broken Systems
At PRL Glass, we specialize in temperature insulation solutions. Thanks to our experience working in California, where extreme climates are common, we have developed systems that will help you maintain even temperatures in your home, building or store.
PRL’s thermally broken systems offer a range of advantages designed to enhance energy efficiency, installation convenience, and overall performance for your projects.
🔹 All-in-One Solutions: Our systems come fully equipped with all necessary components, hardware, and materials, ensuring a seamless installation process.
🔹 Exceptional Thermal Insulation: Designed to minimize heat transfer, our thermally broken frames improve energy efficiency, lower operational costs, and create a more comfortable indoor environment.
🔹 Industry-Leading Lead Times: With our streamlined in-house manufacturing, PRL delivers faster than the competition, keeping your projects on schedule.
🔹 Adaptability Across Industries: Whether for retail, office buildings, educational institutions, or commercial spaces, our solutions cater to a variety of architectural needs.
At PRL, we stand out by providing premium aluminum solutions with the fastest turnaround times in the industry. Our commitment to efficiency and quality is backed by:
✅ Complete In-House Manufacturing & Extrusions – Full control over production ensures precision and consistency.
✅ Stringent Quality Control – Every system undergoes rigorous inspection to guarantee top-tier performance.
✅ Immediate Stock Availability – Standard-length materials are always ready to ship, reducing wait times.
For projects that demand superior insulation, durability, and efficiency, PRL’s thermally broken systems are the smart choice. Contact us today to get started!