The general purpose for the refurbishment was to recover the building’s original image by using materials and constructional systems that would meet the modern requirements for comfort without losing the essence of the original project. The solution chosen was the one closest to the original and available on the market: welded steel glazing bars, galvanised and lacquered with a finish similar to stainless steel. Thanks to their reduced thickness, these steel bars allowed modern requirements to be met while maintaining the original appearance of a terse, continuous panel.