I built a glass block system wall at our tile center. It was installed using special mounting adhesive. Unfortunately, I don’t remember the system designation, I can only find out tomorrow. But one thing I do know. It was only glued to the floor and the back wall, with a 2m installation height. At first, I thought it would never hold. Since this was a display piece, we needed to "decorate," and for that the wall had to go. With three men putting in full physical effort, it was not possible to push the wall over, step on it, or knock it down. That says something about the stability, in case there were any concerns. Regards Dirk