Specialist in finishing works, refurbishment and corrosion protection for infrastructure in the Grand Duchy of Luxembourg. In-house teams, works on complex structures and heritage sites.
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La Lentille — Esch-sur-Alzette: Blasting & Corrosion Protection of an Industrial Icon
Terre Rouge, Esch-sur-Alzette · Luxembourg
GTA Lux
16 months — Delivered 2025
Guardians of industrial memory
A steelmaking monument preserved for future generations
“La Lentille” is a major part of Luxembourg’s steelmaking heritage. Standing on the historic Terre Rouge site in Esch-sur-Alzette, this monumental metal structure is a powerful symbol of the Grand Duchy’s industrial identity — listed and admired, but weakened by decades of exposure to the elements. The project entrusted to our subsidiary GTA Lux is part of a wider plan to modernise and enhance the site. The aim: to secure the long-term future of the structure while scrupulously respecting its heritage character. The mission combined corrosion protection expertise, mastery of complex rope access and the logistics of a site open on a living historic location. Coordinated by our integrated engineering & design office, the project used tailor-made technical solutions — robotic Ultra High Pressure blasting and high-performance epoxy/polyurethane systems — deployed by certified rope access technicians and in-house teams, from design through to handover.
This project embodies GTA Group’s Regen Sense™ philosophy: extending the life of structures to uncompromising technical and environmental standards.
Project sheet
Project owner
City of Esch-sur-Alzette / Fonds Belval (public developer of the Belval site)
Location
Terre Rouge, Esch-sur-Alzette · Luxembourg
Delivery
2025
Duration
16 months
Area treated
~12,480 m²
± 5,480 m² interior + ± 7,000 m² exterior
Services
Subsidiaries
GTA Lux
GTA Lux · Project vision
Protecting the past, strengthening the future. GTA Lux showcases the steelmaking heritage of Esch-sur-Alzette with long-lasting, innovative corrosion protection — so that La Lentille can stand proudly for the next 25 years.
GTA Lux · La Lentille project, Terre Rouge · Luxembourg · 2025
The project in figures
A precision intervention on an iconic structure
5,480 m²
Interior treated
Robotic UHP blasting · High-performance corrosion protection
7,000 m²
Exterior treated
Fixed scaffolding · Epoxy + polyurethane system
25 years
Guaranteed durability
High-performance corrosion protection system · UHP >2,000 bar
16 months
Duration of works
Delivered 10 July 2025 · Heritage site in operation
Performance & technical know-how
Interior treatment
- ± 5,480 m² of interior structure treated
- Robotic Ultra High Pressure blasting — maximum precision and safety
- Application of a high-performance corrosion protection coating
- Certified rope access technicians to optimise safety and lead times
- Complex access in confined spaces — specific logistics coordination
Robotic UHP blasting delivers optimal surface preparation with no impact on the historic structure — an approach that meets industrial heritage conservation requirements.
Exterior treatment
- ± 7,000 m² treated from fixed perimeter scaffolding
- Ultra High Pressure blasting > 2,000 bar
- Application of a high-performance epoxy + polyurethane corrosion protection system
- System durability: up to 25 years in exterior exposure conditions
- Environmental constraints respected — listed site close to homes
Beyond corrosion protection, this project shows GTA Lux’s commitment to innovative technical solutions, a controlled environmental approach and effective coordination between the client, partners and in-house site teams.
Project documentation
Photo gallery
From initial condition to handover — 16 months of works in pictures
Expertise deployed
Subsidiaries involved in the project
