Leak in the corner of shower door

23 Aug 2020
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United Kingdom
Happy new year everyone! We have a leak from our shower door, and I think I've identified the leak to be where the red circle is showing in the first pic, on the outside of the shower door between the door frame and the shower tray base. From the inside (second pic), that area seems to be well-sealed so I suspect that water got in there from the sliding rail bit?

Now the questions is do we just seal the outside bit with silicone sealant pls? Or is there a better way of doing it please? Thanks a lot!


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Only a DIY'er so feel free to ignore! :)
The instructions for the shower panel I installed stated that the panel shouldn't be sealed on the inside; so that if any water did get into the channels, it had a way to escape.

Yes, it does need sealing on the outside, but given the state of some of that sealant, it may be worth stripping it all back and starting again! Sorry! :(
A common fault is that the tray needs sealed before the vertical post is fitted, i.e. behind the vertical post. If that hasn't been done you'll need to remove the door and frame and refit.
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I'd be getting all the silicone cut out (inside and out) and the whole lot well cleaned (white spirits/brush cleaner/meths), then re-do the whole lot from the outside with a good quality anti mould sanitary silicone

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