The building’s unusual second skin is composed of transparent ETFE panels, which act as a buffer against the winter winds. The plastic skin was conceived to save money without compromising on the performance of a double glass facade. The building also features chilled concrete floors and ceilings which keep the interior comfortable.
Supplementing the building’s daylit interior are custom surface-mount LEDs, which cut energy use by 70% compared to traditional lighting. Displacement-filtered fresh air help keeps the workforce perky during long days. Considered as a whole, the project backs up Unilever’s claim that it is one of the most sustainable office buildings in Europe.