The TU Dresden is decisively involved in the development of a sustainable and transparent glazed roof structure. The designed transparent space grid structure is based on a conventional steel space grid, in which all steel members of the compression layer are replaced by glass panes. The glazing transfers large in-plane forces and serves as roof covering. Prerequisite for these structures is the load application of significant compression forces into brittle glass edges. The intended detail design requires a contact material, which is softer than glass while providing a high compressive strength, low creeping and a large working temperature range. Different metal alloys and polymers were tested with regard to their compressive strength. Tests on their creeping behaviour started in 2008.