Blocks with high density 26 kg/m3 EPS are used in Flexypan products; they provide high heat insulation. Their thermal conductivity is very low. (=0,031-0,035 W/Mk). System maintains making saving during its life time. Property of insulation does not change in time. It provides 60 % fuel saving. Heat bridges do not occur since plates cover entire structure with sole material without any clearance. Flawless thermal conduction is enabled.