Photo Credits
Andrea Martiradonna


  • Location Milano
  • Date 2021
  • Studio Policreo
  • Photo Credits Andrea Martiradonna

The project for the M4 Line of Milan’s metro system, designed by the Policreo architectural firm of Sergio Beccarelli and developed for the Municipality of Milan through the SPV Linea M4 SpA concessionaire, extends from the San Cristoforo stop to the Linate stop and includes the creation of 21 new stations, connecting the eastern and western outskirts of Milan. With a total value of €3.5 billion, the new metro line will be completed by the end of 2024, with the first six stations having already opened at the end of 2022.

The ceramic surfaces produced by Cotte d’Este, which meet very specific and stringent requirements of technical efficiency, material quality, aesthetics, and sustainability, have been chosen to clad 47,000 square metres of these stations. Particular importance has been given to the durability of the material, ease of maintenance and hygiene, flexibility of use, production consistency, and environmental sustainability of the coverings – all elements that Cotto d’Este’s surfaces possess and thanks to which the company has won this important public contract.

Subway Line 4 Milan: Photo 22


The plan for the M4 metro line involves the use of ceramics applied to a public works project whose intrinsic value is one of high environmental sustainability. In fact, the porcelain stoneware tiles from Cotto d’Este were selected because they adhere to the environmental sustainability standards outlined by the Environmental Product Declaration, that takes into account the product’s entire life cycle, including the production process, which in this case involves the use of recycled materials that can reuse part of the waste generated during the production phase and reinsert them into the production cycle, in keeping with aspects of circular economy. Additionally, the disposal of the material does not generate special waste, as the tiles can be mechanically crushed with no significant impact on the environment.

Subway Line 4 Milan: Photo 24
custome-made---12mm custome-made---12mm

Custome Made - 12mm

The sizes:

  • 24"x48"
custome-made---12mm custome-made---12mm

Custome Made - 12mm

The sizes:

  • 24"x71"

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