The City of Paris appointed Dominique Marrec of ECDM with design of the Pierre Budin Daycare in the 18th arrondissement of Paris, France. The low-energy building at the corner of Rue Poissonnière and Rue Budin has a façade which covers 520 m²; is vertically and horizontally wavy and made entirely of white titanium Ductal® with organic fibres. The prefabricated Ductal® panels are used as siding and will provide watertightness for the façade in front of the building's exterior insulation. The south façade is devoid of openings for soundproofing purposes with regard to Rue Poissonnière.
Its watertightness permitted the design of an impermeable wavy façade with effective exterior insulation using a panel sandwich system. The mineral texture of Ductal® fits perfectly with the plant-like appearance that the architect desired.