Beyond the frame: how window hardware is influencing the future of building performance

For many, windows are still understood as a visual and material choice involving glass specification, frame material and profile thickness. These are the visible decisions, the ones that create how a home looks and feels from both inside and out. But behind that is a layer of engineering that is increasingly influencing how buildings perform.

For Siegware, that layer is where the real work happens. The company’s origins trace back more than three decades, to a time when European window systems were largely unfamiliar in Australia. What began as a small-scale fabrication effort gradually evolved alongside a changing market, one that is now far more attuned to energy performance, airtightness and long-term durability.

“We were originally producing windows using European systems when it wasn’t common here,” says CEO Chris Fodor. “As the market grew, we started to see a real need not just for the products, but for the hardware and systems that make them work properly.”

That shift became more defined in the late 2000s, when Siegware moved into hardware distribution, supplying high-performance Siegenia hardware to the energy-efficient window industry. What began as a response to supply changes quickly developed into something more deliberate. Rather than simply supplying components, the business began building a broader ecosystem around window performance.

Today, that ecosystem extends well beyond hardware alone. Siegware works across specification support, system configuration and installation detailing, drawing on a network of predominantly European suppliers to deliver a more complete solution.

“We’re not just a simple distributor anymore,” Fodor says. “We’re assisting with everything from system design to training and technical support, so that the end result actually performs the way it should.”

At the centre of that approach is a recognition that windows do not operate in isolation. Hardware, in particular, is what allows a system to function consistently over time. It governs how a window seals, how it responds to movement, and how it performs under pressure from wind, weather and daily use.

This is where European influence has been significant. In many parts of Europe, building performance standards have long demanded higher levels of airtightness and weather resistance. As a result, hardware systems have evolved to meet those expectations, with an emphasis on compression sealing, adjustability and durability.

“European systems are designed around performance from the outset,” Fodor explains. “You’re not just relying on the glass. The hardware is engineered to create pressure on the seals, to control airflow and to maintain that performance over years of use.”

Multi-point locking systems are one example. Rather than securing a window at a single point, they distribute pressure evenly around the frame, helping to maintain a consistent seal. Over time, that consistency becomes critical, particularly as buildings settle and materials shift.

Just as important is the ability to adjust. Higher quality hardware allows for fine tuning after installation, ensuring that windows continue to perform as intended rather than gradually losing their effectiveness.

In the Australian context, however, applying these systems is not always straightforward.

“One of the challenges here is that we don’t build in a single, consistent way,” Fodor says. “We’re often combining different profiles, different materials and different methods from all over the world, so you can’t just take a European solution and drop it in unchanged.”

Instead, adaptation becomes part of the process. Siegware works to modify and refine hardware systems so they respond to local conditions, from coastal corrosion to varying construction methods. It is problem solving that often goes unseen, but it is essential to achieving reliable performance.

This is particularly relevant as expectations around building performance continue to rise. Over the past decade, regulatory changes and increased awareness have shifted the conversation. Clients are more informed, and there is a growing appetite for homes that are not only comfortable, but efficient and durable over time.

“It used to be driven mostly by end users who specifically wanted that level of performance,” says Fodor. “Now it’s becoming more mainstream.”

Material choices are part of that evolution, with uPVC gaining traction for its balance of thermal performance and cost. But regardless of material, the underlying principle remains the same. Performance is not determined by a single component, but by how those components work together.

That includes installation, an area that Fodor sees as equally critical. Even the most advanced hardware and glazing can be undermined if the surrounding system is not detailed correctly. Air barriers, sealing tapes and interface details all contribute to the final outcome.

It reinforces a point that runs through every aspect of Siegware’s work. Windows are systems, not products. And within those systems, hardware is not an accessory, but a fundamental driver of performance.

It is also, perhaps, one of the least understood.

“There’s a lot of focus on the visible parts of a window,” Fodor says. “But the hardware is what allows everything else to do its job. Without it, you don’t get the sealing, the control or the longevity that people expect.”

As the industry continues to evolve, that understanding is likely to deepen. Performance is becoming less about individual upgrades and more about integrated thinking, where every component has a role to play.

For Siegware, that has been the focus all along. Not just supplying parts, but creating the systems that sit behind the frame, ensuring that what looks good on day one continues to perform for years to come.