The ideal option for guaranteeing very high thermal performance, even in thin coats, thanks to the graphite particles contained in the special, unstressed insulation slab. It ensures dimensional stability, perfectly flat surfaces, and secure gluing, even during maximum sunlight. The use of a single raw material ensures that the thermal properties remain uniform throughout the entire thickness of the slab. The absence of any surface cuts ensures a truly uniform product when skimming the external thermal insulation system, eliminating the risk of crackling caused by the infiltration of the skim coat into the cuts themselves.