Palazzo Montedoria, designed by Giò Ponti in 1971, is composed of two nonequivalent parts. This building is covered with green ceramic tiles which are characterized by a smooth diamond-cut surface. Since this installation does not follow a precise framework, peculiar reflections of the light are engendered. In addition, this effect is particularly intensified by the glass windows which are placed at the same level of the façade and, as a result, they reflect the sky.The external façade has been subjected to a conservative renovation. Teamwork provided the reproduction of the porcelain stoneware tiles which were combined with the existing ones (produced by the ceramics Joo). Four different types of ceramic tiles, sized cm 6×19, have been reproduced: relief, low-relief, high low-relief and flat. This renovation aimed at preserving the original tiles as much as possible and, accordingly, the substitution concerned uniquely the most damaged ones. As a result, Teamwork looked accurately for the perfect tones of colour that combined harmoniously with the whole façade and, in particular, with the areas in which the intervention has been massive. The special glazes used in this renovation were specifically chosen to recreate the erosion caused by the weather. In addition, these tiles were produced in accordance with a hand-crafted technique which makes the material heterogeneous, both in the effects on the surface and in the dimension of the pieces.