and cleaning work, with a closed pivoting function". Jürg Egli, Head of Property Management at Forster Profile Systems, explains with a grin that this unwieldy technical term clearly describes the complexity [...] learning of this through a Europe-wide invitation to tender, Forster Profile Systems developed a prototype as a possible system provider together with the architects. Sellien, the architect in charge of [...] was declared a listed building in 1988," Sellien continues. Thus, a thermal insulation composite system had to be applied to the facade, consisting of window parapets made of pumice stone and a visible