UK Doors Online, part of the UKO Group, has announced a full transition of its aluminium product portfolio to high-performance Cortizo systems across its window and door range. This strategic move aims to deliver enhanced performance, refined aesthetics, and a smoother, installer-friendly experience, while retaining the trusted look customers expect.
At the core of this upgrade is a new generation of aluminium bifold and patio door systems, alongside the company’s popular window range. UK Doors Online is believed to be the first in the UK to launch the brand-new Cortizo bifold system, which features slimmer sightlines, now 100mm, down from 107mm, for a cleaner, more contemporary appearance. The system also reintroduces the pre-gasketed clip-in bead, maintaining familiar aesthetics while simplifying installation and improving performance.
The updated aluminium window collection is now offered in Flush, Standard, and Heritage styles, catering to diverse architectural preferences. When combined with energy-efficient glazing, these windows can achieve U-values as low as 1.0 W/(m²K), supporting excellent thermal efficiency.
Further expanding its portfolio, UK Doors Online has launched the Cortizo 4900 sliding patio system, featuring slim 35mm interlocks and a fully beaded design. According to the company, this allows faster installations while achieving U-values from 1.2 W/(m²K). 
Colin McCabe, Group Manufacturing Lead at UKO Group, commented:
Cortizo allows us to deliver higher performance and a better-looking product without complicating installation or increasing costs. It’s exactly the kind of step forward we want to bring to our customers.
A spokesperson from Cortizo added:
We’re proud to work with UKO Group as they bring the benefits of Cortizo technology to their customers. The move reflects a shared dedication to providing products that combine design, efficiency, and ease of installation. It’s a partnership built on delivering real value to the end user.
With these upgrades, UK Doors Online is reinforcing its commitment to delivering modern, high-performance aluminium solutions that meet the evolving demands of both installers and homeowners.
Source: UKO Group with additional information added by Glass Balkan
