The Louise is without a doubt one of the most eye-catching and iconic buildings on the Brussels skyline. Formerly known as the ITT and Generali Tower, this historic structure recently underwent an impressive transformation – and glass supplied by AGC Glass Europe played a crucial role. No less than 7,000 m² of insulating glass was used in the project, assembled in units featuring a Stopray Lime solar control outer pane and a Stratophone Clearvision acoustic insulation inner pane.
Contractor CIT Blaton carried out the large-scale renovation based on a design by architectural firm A2RC. The Louise is a textbook example of how an existing building can be transformed into a future-proof and sustainable landmark. The renovation project demonstrates that – with the right vision and technology – architectural heritage can be given a new lease of life without compromising on comfort, sustainability or aesthetics.
A modernised facade combined with energy performance
The facade of The Louise also needed a thorough overhaul. The original curtain wall did not provide sufficient thermal insulation and no longer met current airtightness requirements. A2RC designed a new, high-performance facade consisting of solar control and acoustic insulation glazing fitted in advanced aluminium profiles with thermal breaks. This drastically reduced the building's energy consumption, while significantly increasing the level of comfort for users.
Facade builder Groven carried out the work, which included installing the glass. AGC's insulating glass met the project's ambitious aesthetic and energy requirements. Not only has user comfort been significantly improved, but energy consumption has also been noticeably reduced. This glass is truly a top performer, capable of delivering insulation, solar control and above all acoustic insulation and superb transparency. Stopray is one of the best performing solar control glass products on the market, due in part to its triple silver coating. Stratophone ensures high-quality sound insulation thanks to its special acoustic PVB interlayer, which acts as a barrier to prevent noise from entering through the window. Stratophone Clearvision combines the performance of acoustic insulation PVB with Clearvision float glass. This extra clear version delivers a neutral appearance, even in very thick compositions. All the AGC glass used in the project is Cradle to Cradle Certified® Bronze.
Built-in sustainability
Sustainability was a key consideration in the renovation, which is why the technical facilities were also completely modernised. CIT Blaton opted for, among other things, an advanced heat recovery system, energy-efficient LED lighting and smart climate control. Solar panels were installed on the roof, meeting part of the building's electricity requirements. In addition, a rainwater harvesting system was installed for sanitation purposes, in line with the Brussels authorities circular construction goals.
Respecting heritage while looking to the future
The renovation project also provided an opportunity to completely modernise the interior. Flexibility and adaptability were key concepts in A2RC's design: the office floors can be freely arranged and are fitted with raised-access computer flooring for easy installation of cabling and technical services. In addition, communal spaces were created that meet today's needs for collaboration and social interaction.
A2RC’s design successfully bridges the gap between the tower's heritage and future requirements. The renovated glass facade gives the building a fresh, contemporary look, while retaining its characteristic features. The result is a building that will last for decades to come, respectful of its history yet firmly focused on sustainability.
