o stage these three faces, the architects chose Terreal terracotta rainscreen cladding. They adopted the length of 1520 mm to design the layout plan. They selected five colours for a progressive lightening effect, underbody with parapet; and three skins, starting from the bottom sanded through the smooth and concludes with some glazed elements at the top .
"This is a project that required a lot of anticipation and preparation says Antoine Metz, Metz director of the company in charge of the cladding installation. The companions were very heavily involved and all business with them, and we are proud of the result. When looking at the building, there is a sense of a patchwork as the play of colours and skins is complex. "
The use of rainscreen cladding wall is limited to the volume of double height lobby. Sunscreens provide solar control in the east and south. They are of two types: either terracotta strips of square section, Autan model of Terreal in continuity with Piterak cladding or wider in rectangular shape Zonda , 45 ° inclined and supporting photovoltaic collectors.
BEPOS certification label demanded a drastic reduction of energy consumption, hence the focus on bioclimatic design. The thermal insulation from the outside is provided by 160mm of mineral wool TH32. It eliminates thermal bridges to the right of shear walls and participates in the high thermal inertia of the building. Control of solar and thermal inertia associated with high nocturnal ventilation ensure thermal comfort during the summer without expenditure of energy. "
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