ABSTRACT
The present paper deals with the economic impact of the thermal rehabilitation of buildings with bearing structure of large precast concrete panels. In this perspective, the decrease in heating energy consumption is evaluated through efficiency assessment of various solution of thermal rehabilitation. The solutions approached in this study vary by considering a range of thicknesses and types of materials for the insulation layer, in the attempt of supplying relevant data on the overall effect of these parameters. By imposing the maximum thermal transmittance for each envelope element according to the Romanian normative, the minimum required thickness of a given insulation layer is established for every envelope element. Starting from these minimum values, the thickness of the insulation layer is gradually increased in order to determine the progress of the energy efficiency of the building. Consequently, the limit at which the increase of the insulation thickness becomes unjustifiable is identified.
