A student at the Polytechnic University of Turin, Manuel Ibba, has devised a thermochromic roof. It is made of tiles that when it is cold are black to absorb heat and that when the temperature exceeds 20ºC begin to lighten to become white to reflect this heat.

The result is that the building drastically reduces carbon dioxide emissions from using air conditioning in summer and heating in winter. And, of course, it also saves a lot of energy resources.

The X-Tile project, which won a national innovation award, is based on a unique treatment in the process of making the tiles, which are painted with three different layers and baked twice so that they can then change color. depending on the outside temperature.