Completely wrong amateur design for actual water containment. I have no idea how that passed inspection in your non US location. But it would not pass here.

The whole area needs to be shower pan. With a curb. You either keep mopping up and wait for the water damage, or you rip it apart and start over with a correct design.

Depending on what hack designed that, and what permitting didn’t happen, your Pro may be on the hook here. Start with your local permitting office. But that does not look like you hired a Pro. So you may be SOL on that front.

Really a shower screen acts like a shower curtain you still need walls around the shower.This is beyond stupid.

Do you want us to help or not. This is not working for a very simple reason you need walls around a shower and you don’t have them so get them there is no other answer . I am blunt because this was not a good idea nad I have lots of clients thanks who like the fact i speak my mind.

Benjamin, I'm not from a region of the world that finds "this is beyond stupid" to be a productive comment either, but in some areas of the world that's just normal.

It looks like your only option is to have that undersized shower pan removed and replaced with a full width shower pan. I would also recommend that you have a glass door installed along width of that opening. That will totally enclose your shower in glass and tiled wall. This will prevent water from escaping and also make your shower warmer/steamier when using it. That's really the only way you're going to keep the water in that shower.

Thank you Brandt really appreciate the constructive comment :) I am looking now for some enclosure which will go all the way round. Will cost a bit more but should be worth it in the long run

Patricia you have been 0 help.. walls are not just the answer so I would suggest to your clients to think twice before using you. Seems like you mind is pretty closed and surrounded by walls!

The thing is, you can’t replace just the pan. It compromises the waterproofing membrane interface between pan and wall. You have to do the whole shower over completely. Which is what I said above. Live with it or rip it out. There is no in between.

I think i might be able to buy a new enclosure to sit ontop of the tray

I have the same shower try ..I have a sliding glass door so no leaks

Do you have a link to it?

I think the only choice short of a rip-out is to get a new glass enclosure that goes all the way around and has a door (probably on the front side). Shouldn't ruin the look, but it will make that empty corner look a bit stranded. Maybe you can hang a few towel hooks on that wall (facing the previously empty side) to make it look intentional and get some use for the space.

Benjamin Broadhead..I am in the UK ..it was a separate buy to the tray .. try googling sliding shower doosrs

Looking up "Ugly American" in the Dictionary now...
It's possible to give advice, even direct advice, without being abrasive.

Okay, there is just a whole lot wrong there, and it is not just the shower pan, thus some of the harsh comments.

1. The tiles do not overlap the pan, providing no mechanism to channel water from the walls into the pan. Water will get through the grout on the walls. It should then travel down a waterproof membrane, into the pan and down the drain. Your installation can't do that. The water will go down the waterproofing (assuming it exists), outside your shower pan and into lower walls and/or your floor.
2. Even if your tile DOES overlap the shower pan, water can still wick out side the pan area, then down the wall, into the floor, because your pan isn't big enough. Simply purchasing a new enclosure to sit on top of the pan will not solve this problem
3. Your existing glass panel doesn't even reach the end of the shower pan, providing an easy avenue for water to reach outside the shower "enclosure.
4. Even if you increase the size of your shower pan to cover the entire area, if the waterproofing wasn't done correctly, you will still have water in your walls.
5. Unless your entire bathroom floor is constructed like a wet area, with waterproofing and a drain mechanism, then this is destined to be a problem no mater what you do with the enclosure.

Given all of that, we are back to, "This is beyond stupid." Reality is, you will replace this now for a large fee, OR you will replace this and repair the water damage for a really large fee. Pay now or pay more later - it's as simple as that.

I don't disagree that this was poorly designed and built. Assuming this wasn't all built as a wet room, I also don't disagree that It's not fixable short of starting over.

So look... I get it where some of these poster's are coming from: People are spending a lot of money installing showers that sometimes even look great... but are structurally disasters that aren't "fixable". Many of these are even being installed by "professionals".

But some of the commenters here really get off on being harsh. It's some of the same ugly comments from one post to the next. The OP clearly isn't having it either.

Jake-

I'm with you 100% on this. There is a way to give helpful comments without being rude or making unnecessary judgments, or trying to rationalize why this is ok. I'm surprised Benjamin had the stamina to stay around and I commend him for hanging in here. We're all probably experts in some areas, but I suspect we've all also done a few things that were less-than-ideal in retrospect. When one comes to these forums looking for help on a vexing problem, it is not helpful to be subjected to a barrage of negativity. I learned a long time ago that I had a better chance of showing someone that my opinion was right or constructive if I refrained from insulting them or making them feel worse.

OP, I'm afraid any money you'd spend on a partial fix would be wasted, so I'd urge you to bite the bullet and get the shower completely redone by a professional.

OP, also if you have a shower curtain rod going across why aren’t you using a shower curtain?

Hi Claire,

That rod is just a support for the glass panel, not a shower curtain rod. Looking at where it's positioned, if it was used as a curtain rod I'd guesstimate he would have about 24-26" left in the shower.

He could try to install another rod at the end of the glass panel for a shower curtain, but it would be a temporary hack solution at best. Water will continue to be a problem there.

We don't really know how that was constructed behind the tiles. My guess is that its masonry, not wood. My observation when I was in UK was that everything was masonry, even the fence posts. There may or may not be waterproofing behind the tiles where they meet the floor. Even so, It's difficult to imagine how that floor / wall / shower pan could have been made waterproof though.

To me the glass should have been taken up to ceiling the with a sleek frame support or something like a suctioned support to hold the glass

and glass should have been taken to the end of the shower tray also the tray should be a little higher

Do they by any chance make a pan that would go all the way to the corner? I know that's a redo of the bottom of the shower area, but it would be much "cleaner" design-wise and would take care of that part of the problem. A good solid surface fabricator could make you a pan that Looks exactly like this one but is the correct size.

This is just going to cause problems in the long term. I tore out a bathroom that was not very old, that had a bathtub in it, and because of chronic splashing at one corner of the tub, which apparently dripped on the floor, (not a lot of volume, but chronically), there was an actual hole in the subfloor because it had rotted away--and part of the sill for the adjacent wall. And there was never quite enough to damage the ceiling below. But part of the floor tile was sitting on nothing structural.

They should have the shower tray taken all the way to the corner but why a tray they could have use a different tile flooring and added a ceramic or marble border.

Rip it out.