Grouting and finishing the panels
After all the tesserae were glued and the silicone was given time to cure, we mixed together the grout and poured it on. It had to be smoothed in various directions to ensure it filled in all the cracks and spaces in the glass. Once it was starting to set, we wiped off the excess on the top and started to wipe off the residue on the individual pieces, which also helped to clean up the glass. After that it was left to set for a bit longer, and then we used cloth to buff the panel to ensure it really shone and remove the rest of the surface grout.