As Shaun says, silicone all your red lines no silicone for blue or purple.
The glass/profile on the outside I do 100mm, but I suspect 50mm is sufficient.
The reason yours is leaking at the green point is that water is getting inside the profile - this is designed to happen by the way- but because you have sealed inside the cubicle the water can’t run out onto the tray as it’s supposed to do it comes outside at the glass/profile joint in your green patch.
Sealing this area up 100 mm will stop it coming out this way, but removing the inside silicone is the most important step -as this allows the water to go back onto the tray and down the drain.
hi Ben
thanks, so the silicon on the outside should cover the gap between the glass and the silver profile where I put the red arrow pointing, is it ok to do this without removing the glass? As in just run the silicon up 50 mm. the guy was trying to say run it all the way up to the top of the glass for his third attempt to correct the job
And for the inside, yeh seems bizzare that the water will run freely out by removing the silicone along the purple line. So it’s ok that water gets into the profile but just needs to be able to escape at the bottom?
Thanks again