ABSTRACT
By adding a glass facade in front of the main facade a sun-tempered space is created. The gap between the facades, typically between 60 and 80 cm, reduces thermal losses from the building and the air may be supplied to the ventilation intake. This construction is often referred to as a ‘double facade’. Non-energy benefits are often decisive in this design being chosen. For example, sun shading can be located in the gap, protected from wind and the elements. The outer glass skin may serve as a barrier to the street noise at urban sites. Not surprisingly, the double facade has become popular among architects and clients in recent years.
