Polyurethane with UV protection
My outdoor shower mosaic contains some stone beads that have a colored coating. The bead store suggested that I protect them with polyurethane that has UV protection because otherwise, they'll fade. Do any of you know a name brand I can search for? Also, the mosaic contains mostly stained glass. Will the polyurethane stay on the glass, or will it peel off and look ugly? I'm thinking the best route would be to individually paint the polyurethane onto each bead. I'd rather do it right than do it fast. I'm not worried about inconvenience. I will take as much time as I need to do the job right.