Construction

Material layers (from outside to inside)

U value (W/m²K)

External wall (type 1)

0.03 m cement rendering + 0.05 m extruded polystyrene + 0.2 m aerated concrete block + 0.02 m gypsum plaster

U_{wall_1} = 0.371

External wall (type 2)

0.03 m cement rendering + 0.05 m extruded polystyrene + 0.2 m concrete + 0.02 m gypsum plaster

U_{wall_2} = 0.576

Ground floor

1 m reinforced concrete + 0.03 m concrete + 0.04 m extruded polystyrene + 0.03 m concrete + 0.05 m screed + 0.01 m parquet

U_floor = 0.513

Flat roof

gravel + roofing felt + 0.05 m expanded polystyrene + EPDM + 0.04 m concrete + 0.14 m reinforced concrete + 0.02 m gypsum plaster

U_roof = 0.547