Building located in Madrid. The cladding is Carioca slate with 20 mm thickness and various off-cuts along the width and height, completely arbitrary, located at the line of windows, with vertical blocked joints and continuous horizontal joints. The particularity of this cladding implies the impossibility of machining, as the slate in particular presents a laminar molecular composition, therefore, if the edges are machined, it may begin to open through laminates or exfoliation. For this reason, the GR-ESP-PI system was selected as it permits stabilization of the panel in its position, maintaining it free from vibrations and from the effects of the horizontal wind load. The rest of the panel cladding was resolved with the vertical profiling system PF-ALU/PL.