In Greece temporary covered areas are seen as open space, and allow so a higher usage of the land. For this reason the Mall got a reefable membrane roof.

The goal during the design was, to find a light roof with direct view to the blue sky. The solution is a north light roof, with highly translucent membrane panels and with a transparent cladding on the north side of the parallel steel girders to allow the direct view, and the entrance of the cool northern light.

The main structure consists of 13 crescent-shaped arched girders, which span freely up to 50m. These girders stand diagonally to the principal direction of the construction in east-west-direction. So only cool northern lights can come across the ETFE-cushions into the hall.

Between the top chord of one truss, and the bottom chord of the neighbour truss one layer of silicone coated glass fibre membrane is spanned. The membrane is attached with travellers to an aluminium rail, and can be opened and closed with.