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Hello all, I fitted a 900mm quadrant shower tray and followed the instructions to fit the tray then tile down to the top of the tray, then seal the tray to the tiles.
My problem is that the 90 degree corner must be out by about 1/2 degree (90.5 deg), because at one side of the tray, at the door end, there is a gap to the wall of about 12mm. The tiles are about 10mm thick so, when you look at the top of the tray, there is a 2mm gap over the last 300mm or so. I have failed to seal this gap time and time again using silicon and sealing strip. Any advice (without removing the tray) to permanently and professionally seal the gap would be much appreciated!!

I can't imagine that a properly applied quality sealant wouldn't sort this.......unless there is movement of the tray..

Pics of the problem area ??

Thanks for answering. No photo is possible. I'll try to describe the situation. Imagine the top of the tray is fully under the tiles at the 90degree corner, sealing is good here. As you move along the tray's top from the corner, the tray leaves the wall until after about 700mm, the gap is not between the cut edge of the tile and the top of the tray, but between the face of the tile and the external vertical edge of the tray. This gap then increases to the end of the tray where it is about 3mm. When I sealed this gap, all I did was to push sealant through the gap without giving any faces for the sealant to adhere to. I hope this has been helpful to you.

Really the tray should have been either cut into the wall or the tray set to equalise the gap between the 2 walls. Without moving the tray there's no professional solution.