Is it sufficient to insulate only the north façade of a building?

       Insulation should be considered as a whole. For this reason, thermal insulation should be done in all building components (roof, wall, floor, floor, console, glass and joinery). A thermal insulation to be made only on the northern façade does not provide sufficient thermal insulation due to the excess heat losses, heat losses continue in the building, and the annual heating (winter) and cooling (summer) energy needs do not decrease sufficiently.