As societies progressed, they became more demanding, demanding protective measures in the buildings in which they lived or worked, safety requirements, or the fire behaviour of the materials.

Once their demands for protection had been met, the demands for comfort appeared in the more developed societies and the birth of thermal or acoustic comfort systems took place.

Then when energy consumption became a problem, thermal insulation also took on the role of contributing to energy saving.

In this context appeared in Sweden in 1940 the SATE and in the 50s were extended to Germany and Switzerland, it was mainly the Central European countries. those who, having an ageing housing stock and more shortage of land in the interior of the cities, needed rehabilitation and opted for this system to be suitable to adapt to buildings already built and to the weather.

In the Latin countries, the entry was later due on the one hand, to the fact that the concern was more in the ventilation to protect from the heat than in the isolation, erroneous belief, because the isolation isolates us also from the heat; and on the other that until relatively few years ago not much effort was devoted to the rehabilitation of the buildings.

Nowadays, as we talk so much about sustainability, thermal insulation plays an increasingly prominent role in the reduction of CO2 emissions; in addition, the economic savings that are required to adapt the facades to the demands of the “thermal envelope” is around 20%.