I have a very standard glass shower door that opens & closes on a normal roller-ball track (sideways). But it has become very squeaky over the past couple of months (it's only about 1.5 years old). It doesn't appear to be the track that's squeaky, but instead the rubber seal that runs vertically along the inside edge of the door. I assume it's because it's rubbing along the glass. I have obviously tried cleaning the glass & the seal, but with no success. I assume it needs some form of lubrication - any ideas please?

Thanks

Can you post a picture? Usually there is some adjustment that will widen the gap.

I have exactly the same problem with squeaky shower doors, anyone found a solution?