Eurocell’s 70mm Logik system was chosen as a more cost-effective and sustainable alternative to aluminium fenestration solutions for the redevelopment of a derelict warehouse, alongside the construction of three new apartment blocks in Leicester city centre.

Nu Openings, which was contracted to install the windows and doors, proposed Eurocell’s PVC-U 70mm Logik chamfered system – which can achieve U-values of 1.2 – in black ash and Syncro sliding doors, over the original, more costly specification for brown aluminium.

This specification change introduced the need for careful adherence to local planning protocols, collaboration with architects, and compliance with Building Regulations.

Nu Openings worked closely with Padmore Construction and Eurocell’s commercial team for the project.

Steve Carvell from Nu Openings, commented: “Convincing the planners and architects to switch from aluminium to PVC-U wasn’t easy. It wasn’t a straight swap – we had to make sure the new material met all the aesthetic, structural, and thermal requirements.

“Eurocell’s technical team played a crucial role in this process, providing detailed drawings and performance data to demonstrate how Logik 70mm could deliver on energy efficiency, durability, and design. The team’s expertise helped us navigate complex planning approvals and ensured that the new specifications not only met, but exceeded expectations, ultimately securing the confidence of all stakeholders involved.”

Despite the derelict state of the existing building, which required creating new structural openings for window installations and precise on-site measurements, the installation of over 220 frames has been successfully completed.

Kelly Hibbert, head of commercial at Eurocell, also highlighted the critical role of acoustic performance in the project: “This project extended far beyond aesthetics – the windows needed to comply with strict acoustic requirements. The successful collaboration between planners, architects, and Nu Openings enabled us to meet every aspect of the design brief, transforming a derelict site into modern, energy-efficient apartments.

“In addition to the performance benefits that the Logik 70mm system brought to this development, Eurocell’s sustainability credentials were also a key advantage. Our products, containing an average of 32% recycled PVC-U, contribute to the construction sector’s increasing focus on environmental responsibility and the complex journey towards achieving Net Zero.”