The modern architecture is affected by glass façades and novel glass structures. State of the art for the integration of glass elements in buildings are point and linear fixings which are usually designed mechanically. However, these mechanical fixings are unsuitable for the fragile material glass and increase the risk of glass breakage. Adhesive joints can avoid this problem. For strong adhesive joints not only the selection of a suitable adhesive is es-sential. The surface quality is just as important for a very good adhesion. The surfaces of the materials and thus their adhesive behaviour can be modified by specific cleaning and surface treatments. In this study, several pretreatment processes were investigated in rela-tion to the resulting surface effects and their suitability for adhesive bonds in glass con-structions. Furthermore, the stability of the surface modifications was examined.