Residential Building, Liege, Belgium

The project carried out in Liège, Belgium, involved a listed historic building that was converted into a residential apartment building, with the joinery works representing a highly complex intervention and a significant level of heritage responsibility.

A defining aspect of the project was the faithful reproduction of original joinery over 100 years old, including the manufacture of angled windows (angle windows) for the corner areas of the building. These windows, clearly visible in the images, required special joinery solutions, extremely tight tolerances, and precise profile execution, making them among the most challenging elements in timber joinery for historic buildings.

The joinery package includes traditional windows, full-height French doors (porte-fenêtre), as well as multi-level composed elements, all adapted to the original proportions of the façade. The profiling details, mouldings, vertical mullions, and horizontal transoms were executed to accurately reflect the rhythm and elegance of the historic architecture, as evidenced by the workshop and installation details.

A total of 127 sqm of laminated timber joinery was manufactured and installed, using meranti wood, executed on the IVLUCA 68 European profile, selected for its suitability in historic monument interventions and for its optimal balance between traditional aesthetics and functional performance. The solutions included various window types, ranging from standard opening windows to basement-style (“wolf-mouth”) windows, complemented by applied cremone fittings, integrated both functionally and decoratively in line with the original architectural language.

Due to its high level of customization, the complexity of the corner windows and French doors, and the precision of execution, this project is regarded as one of the most challenging and representative works in LUCA’s portfolio, demonstrating the company’s capability to deliver heritage projects at an exceptional technical and aesthetic level.