In spring 2017, the Saarbrücken Regional Association announced a broad investment programme for the schools in its area of responsibility. In many properties, insufficient thermal insulation, leaks in the building envelope and cold bridges were resulting in high operating costs. Dampness was “gnawing away” at the structure.
The recipients of investments under this programme included the social care education centre (SBBZ) at the Schmoller School in Saarbrücken, with Metakon-Metallbau GmbH producing more than 300 windows for this school and equipping them with a hardware solution from Roto. The particular challenge was that the building was listed.
Lothar Behles, project manager at Metakon, can still clearly remember the condition of the old steel windows in the Schmoller School: “The windows were leaking at many places while numerous sashes and frames displayed visible corrosion damage. Moreover, the single-glazed windows hardly provided any thermal insulation.”
The new window sashes for the Schmoller School constructed in the 1970s were to feature double glazing. With a sash height of more than two metres, this meant that high weights were to be expected.