This product is an aid in the vibrating laying of porcelain stoneware floors. The V-Spacer® developed by the company Röben ensures that the porcelain stoneware only touches the lower edges, which are no longer visible. It only keeps the upper edges at a distance so that the vibrating machine cannot cause any damage, but the visible joint is not enlarged. The contact slurries rising from below during vibration are supplemented by the uniform filling of the V-shaped joint from top to bottom, thus ensuring optimum flank adhesion. For example, heavy-duty lift trucks can be easily manoeuvred over the flat, firm and narrow-groomed floor surface.