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Sustainable
through and through
Puntigam Campus Graz
Franz&Sue architects’ vision for the extension of the
primary and secondary school in Graz was to design a
bright, open, and sustainable school. The well-thought-out
lighting concept was a big draw in the architectural com-
petition already. The materials used in this project are also
unique: Only natural materials which are both sustainable
and simple were used. This is rare in educational construc-
tion. The exterior walls are made of vertically perforated
bricks with hemp insulation on the outside and clay plas-
ter on the inside, which also ensures a pleasant indoor
climate. Wood chips coated with clay and soft wood fibre
boards were used under the screed. For energy, a heat-
ing and cooling system with deep-well and photovoltaic
system was used. An automated window gap ventilation
system provides controlled air exchange in the classrooms
and also contributes to cooling in summer. The toilets are
flushed with rainwater to save drinking water.
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