How to Choose Between Thermally Broken and Standard Aluminium Systems

When you decide to invest in aluminium fenestration, the first and most critical question you will face is: "Should it be thermally broken or standard?" The answer to this question directly impacts not only the initial cost of your project but also the comfort you will experience and the energy bills you will pay for years to come.

In the past, metal was inherently considered "cold." However, with evolving technology, aluminium has revolutionized thermal insulation. But what exactly is the difference between thermally broken aluminium and standard (non-insulated) joinery? Which system is suitable for which environment?

In this article, we examine the technical battle between these two systems and provide the insights you need to determine the winner for your project.

1. What is Thermally Broken Aluminium Joinery? (The Key to Comfort)

Aluminium is a metal with high thermal conductivity. This means if it is cold outside, it rapidly transfers that cold inside; if it is hot, it transfers the heat. Thermally broken aluminium systems are engineering marvels designed specifically to break this conductivity.

How Does It Work? (The Polyamide Thermal Barrier)

In this system, the aluminium profile facing the interior and the profile facing the exterior are physically separated from each other. A rigid plastic bridge (barrier) called polyamide, which absolutely does not conduct heat, is inserted between them. This prevents cold air from entering and warm air from escaping.

What Are the Advantages?

• High Energy Savings: It reduces your heating costs in winter and cooling costs in summer by up to 40%.

• Eliminates Condensation: The major issue of "sweating" or "fogging" seen in old-style metal windows does not occur in thermally broken profiles because the interior profile remains at room temperature.

• Acoustic Insulation: The combination of the thermal barrier and double glazing also minimizes external noise pollution.

Primary Applications:

Exterior residential windows, balcony doors, winter gardens (conservatories), and all commercial spaces where heating/cooling is active.

2. What is Standard (Non-Insulated) Aluminium Joinery? (The Economic Solution)

As the name implies, these profiles do not contain a thermal barrier (polyamide bridge). The profile consists of a single, monolithic piece of aluminium. This means the material transfers external temperatures directly to the inside.

What Are the Advantages?

• Cost-Effective: Since the production process is simpler and no extra insulation materials are used, the price is more affordable compared to thermally broken systems.

• Lightweight and Sleek: They can often have slimmer sections, offering a stylish aesthetic for interiors.

What Are the Disadvantages?

• Heat Loss: If used on an exterior façade, it leads to significant heat loss.

• Risk of Condensation: If it is freezing outside and warm inside, water droplets (condensation) may form on the profile surface.

Primary Applications:

Ideal for areas where thermal insulation is irrelevant. For example:

• Internal office partitions.

• Apartment entrance doors (if the hallway is unheated).

• Shopfront showcases (in specific non-heated zones).

• Interior doors.

Comparison Table: Thermally Broken vs. Standard

To make your decision easier, we have compared the two systems based on their fundamental features:

Which One Should You Choose?

When making a selection, your only criterion should not be "budget." Using cheap materials in the wrong place will return to you as high energy bills in the long run.

Scenario 1: I am Renovating My Home’s Windows

You must absolutely choose Thermally Broken Aluminium. This is mandatory to keep your home warm in winter, cool in summer, and to avoid issues with dampness or mould.

Scenario 2: I am Installing Glass Partitions in My Office

Since there is no temperature difference between rooms, using Standard Aluminium (Office Partition Systems) is the most logical and economic choice. There is no need to pay extra for an insulated system.

Scenario 3: I am Building a Shopfront

If your shop has seating areas near the glass (like a café or restaurant), an insulated system is recommended for customer comfort. However, for a retail store with high circulation where products are simply displayed, standard systems may be preferred.

Conclusion

In the world of aluminium fenestration, there is no such thing as "bad material," only "misapplied material."

• For exteriors and living spaces: Energy-friendly Thermally Broken Systems.

• For interiors and partitions: Budget-friendly Standard Systems.

You can contact our expert team to determine the most suitable system for your project's needs and to make the right investment for energy efficiency. Remember, windows are installed once, but you live with their comfort—or discomfort—for years.

Frequently Asked Questions (FAQ)

1. Is thermally broken aluminium better than PVC?

Both materials have advantages. However, aluminium is a more prestigious and longer-lasting option than PVC due to its superior durability, ability to offer wider glass areas with slimmer frames, and resistance to UV discoloration.

2. Can my existing standard windows be retrofitted with insulation?

Unfortunately, no. The structure of the profile is determined during the manufacturing stage. To achieve insulation, the window units (frames and sashes) must be completely replaced.

3. What is the lifespan of thermally broken aluminium?

Aluminium is one of the most weather-resistant metals available. With proper maintenance, it can be used problem-free for 40-50 years.