How to Choose aluminium flush casement windows?

What is the Best Aluminium Flush Casement Window?

When Origin Frames launched their new aluminium window, it was the first to offer a flush casement. This latest generation of Origin aluminium windows still stands out as a unique offering in the market. It features a flush sash on both the inside and the outside of the window. We believe the Origin Twin Flush window is arguably the best aluminium flush casement window available today. However, we decided to look at some other options for comparison.

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Why Choose a Flush Casement Window?

The concept of a flush casement window is not new. Traditional timber windows have had flush opening sashes for many decades. PVCu systems followed, with products like those from Residence 9 being particularly noteworthy. PVCu manufacturers often market their flush casement windows as suitable replacements for traditional 19th-century timber windows. In contrast, the marketing for aluminium flush windows is mixed, with some presenting them as contemporary while others suggest they are suitable for replacing old timber windows.

In our experience, flush casement windows can look more aesthetically pleasing than traditional overlapping vents, depending on the overall window design.

Currently, Origin remains the only company offering an all-aluminium flush casement window, meaning direct competition is sparse. However, consumers looking to buy windows will naturally consider alternatives, which is why we are comparing Origin's offering to other systems, including:

• Warmcore Aluminium Windows
• Senior Aluminium Series 2

Design of a Flush Casement Window

One key difference between Origin, Warmcore, and Senior is the design of their flush sash detail. Origin's Twin Flush window achieves the flush look without needing any additional sections to create a lip—an impressive feat of engineering and design. Warmcore windows use a separate extrusion at the front to achieve the flush appearance.

Senior Aluminium Series 2 is also an attractive option, though its construction is more complex, involving seven different extrusions. While this may not matter to the average consumer, it highlights the different approaches companies take in designing their systems.

Comparison: Origin, Warmcore, and Senior Flush Casement Windows

All three systems are excellent and suited for their intended purposes. They offer diverse solutions for both installers and consumers and are aesthetically pleasing. Here's a quick comparison:

Origin Windows

The Origin Twin Flush windows share the same internal detail and we consider this window to be excellent in design, performance, and range of options available. One standout feature is the colour-matched handles, a complex task that Origin has managed to perfect. There is a small issue when using Origin windows for replacement installations, as the outer frame is quite narrow and an add-on section may be required, adding to the visible sight lines.

Senior Aluminium Series 2

Despite being marketed primarily for commercial use, Senior Aluminium Series 2 windows are suitable for residential properties. While the frame depth is substantially larger than that of Origin or Warmcore, the profile faces are much slimmer. The deeper frame from the glass line might not appeal to everyone, but it delivers a sleek and minimalistic look.

Warmcore Windows

Warmcore offers a highly flexible window system with four frame choices and two glazing bead options, making it suitable for both contemporary and traditional designs. Warmcore also provides a tilt and turn option that the other systems do not offer.

Complementary Doors and Windows

Senior Architectural does not offer a matching range of doors with their Aluminium Series 2 product. However, Origin and Warmcore both offer bifolding, single, and French doors, as well as matching windows.

How to Buy Flush Casement Windows

Origin is the sole fabricator of their windows, selling directly to consumers through their network of manufacturers. Warmcore and Senior are available through a network of approved fabricators, marketed for their ease of production without significant additional tooling.

Lead Times

Origin leads the industry with fast lead times, offering windows in one week, except for Aerogel upgrades or special colors, which take three weeks. Warmcore windows also have reasonably good lead times. Senior's lead times depend on individual fabricators.

Guarantees

Origin offers a market-leading 20-year warranty, similar to their bifolding doors. Synseal provides a ten-year guarantee for Warmcore windows, honored by the installers. Senior Systems' guarantees depend on individual fabricators.

What is the Best Aluminium Flush Casement Window?

It's challenging to compare these three systems directly because they are all quite different. Origin and Warmcore are close matches visually, while Senior offers a slimmer, distinctive look.

Senior Architectural Systems

Senior Aluminium Systems provides an excellent range of windows, especially in their hybrid and PURe ranges. They have a strong reputation in the commercial sector but are less known in the residential market. However, with their upcoming marketing campaign, we hope they will become as popular for residential use as they are for commercial projects.

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Origin Twin Flush Windows

Origin is well-established as one of the best aluminium providers in the UK. Their Twin Flush window is an impressive product with excellent specifications and a 20-year guarantee. Some consider Origin windows a bit bulky compared to regular aluminium windows, but this is a matter of personal preference. With Origin, you'll get direct supply, fast lead times, and a great customer experience.

Warmcore Aluminium Windows

Warmcore has been well-received in the market, offering flexibility with multiple frame choices. It provides great thermal performance and matching doors, making it an appealing option. While Origin may have the edge in aesthetics and consistent quality, Warmcore's frame choices and innovative design make it a strong contender. Senior windows offer a unique alternative, standing out with their distinctive design and craftsmanship.

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