Glass is one of the oldest artificial building materials. Recent developments and research works in the last twenty years made glass to one of the most advanced building materials. Current projects are showing glass in different applications. Flat and curved, with solar control coatings, with enamels to address different idea of design and so on. But working with a material like glass needs detailed knowledge about its aesthetical and technical parameters. This paper should show theses expectations about a material at different projects in terms of material bases, development, production and the criteria regarding the acceptance of any deviations.