UNESCO Headquarters

The use of these materials, combined with the construction methods of the time, exposed the building to new pathologies, particularly on the facades, soffits, acroteria, and canopies, which are increasingly vulnerable due to their recent aging. In particular, the building's reinforcement, which is too close to the surface, causes corrosion, weakening the assemblies and making the replacement of certain parts of the building complex. The metal "sunglasses" that support the glazing also pose particular challenges. In addition, the presence of asbestos on site further complicates the work ahead. The renovation of these elements requires extensive work, carefully planned in advance, due to the complex accessibility of the site and its great architectural value. Following the call for tenders launched by the project owner, which was recently won by the 2BDM agency, a diagnostic study for the restoration of the facades and roofs of buildings I and III of the UNESCO headquarters is currently underway. The restoration project will therefore take all these constraints into account and will include a phased approach to address these technical issues while preserving the architectural integrity of the monument.