The Future of Window Reinforcement: uPVC Thermal Reinforcement vs. Steel

The role of reinforcement in uPVC windows and doors is crucial to make them even more secure and durable. For years, steel has been the go-to material for reinforcing windows and doors.

However, there's a shift happening in the industry. Reinforced uPVC windows now uses uPVC thermal reinforcement. This innovative design is a strong contender that offers more benefits than traditional steel.

In this blog, we'll explore why this shift matters and how it impacts the future of window reinforcement.

Reinforced uPVC windows: Why reinforcement matters

uPVC, on its own, is extremely strong, long-lasting and capable of withstanding the harsh elements of UK weather. It does not get damaged by heat, rain or snow and will never rot, peel, or warp. What the addition of reinforcement does, is adds an extra layer of strength to the profile to ensure frames retain their size and shape. Without reinforcement, the structural integrity and durability of windows and doors can be damaged.

Traditionally, galvanised steel has been the preferred material for profile reinforcement. Its strength and rigidity provide excellent support, making reinforced window frames more secure and durable. However, many benefits also come with limitations. Steel is not an insulating material, which means valuable heat in new energy efficient windows and doors can be lost, simply through the material used to reinforce frames. Using steel as reinforcement in uPVC windows also adds significant weight to the frames making them heavier to install.

Introducing Liniar Thermal Reinforcement (LTR)

Liniar Thermal Reinforcement (LTR) is a high-performing alternative to traditional steel reinforcement. It is designed for use in Liniar’s 70mm window and door system and offers advantages in both thermal performance and sustainability.

Liniar have historically been able to reduce the amount of steel content of its products through innovation. The introduction of LTR to replace steel reinforcement, is the next stage in Liniar’s continued process of innovation and improvement.

Addressing misconceptions

There’s a common misconception that PVC inserts are inferior to uPVC steel reinforcement. Windows and doors containing thermal reinforcement not only offer the same strength as those reinforced with steel, but they are also more easily recycled at the end of their life, making them more eco-friendly. The unique multi chambered design also minimises heat which can be lost through window and door frames. This makes LTR not only a viable alternative but a better one in many aspects.

Performance and testing: uPVC window reinforcement

Extensive testing from British Standards Institute (BSI) confirms that windows and doors with LTR products outperformed the current British Standards. This reinforcement also met the security requirement (PAS24) and air, water tightness, and wind loading (BS6375 Part 1).

In-house cyclic testing by Liniar further ensures the product’s longevity. The current British Standards tests to 50,000 cycles. LTR surpassed this by completing over 85,000 cycles with no failure or compromise in products.

Benefits of Liniar Thermal Reinforcement

These benefits make LTR a superior choice for modern window and door reinforcement. Here’s how LTR stands out:

Improved thermal performance : LTR improves the thermal efficiency of windows and doors. It aids in reducing energy costs and maintaining comfortable indoor temperatures.

More sustainable product : LTR inserts are made from recycled PVC, which makes them an eco-friendly choice that supports sustainability efforts.

Less effort to drill through : Drilling through LTR is easier compared to steel. This benefit makes installations quicker and more efficient.

Easier to install : The lighter weight nature of PVC inserts simplifies the installation process, reducing labour time and effort

Easier end-of-life recycling : uPVC boasts sustainability, easier to recycle at the end of their life cycle.

uPVC vs steel windows: A detailed comparison

Here’s a detailed comparison table between uPVC thermal reinforcement and traditional steel reinforcement. This table highlights the key features and benefits of each material so you can choose the best option for your projects.

Conclusion

With improved thermal performance, enhanced sustainability, and easier installation, Liniar Thermal Reinforcement is a superior alternative to uPVC steel reinforcement. Its proven durability makes it a reliable choice for any project not to mention LTR’s performance and environmental advantages.