Looking for inventive ideas on shower cubicle leak

[shooey]

Hi,

I have one of those cheap plastic / fibreglass shower trays that flexes. And there's a gap between the tiled shower walls and the shower tray filled with silicone. I've had it "fixed" professionally a few times, and it lasts for a year or so but the leaks always come back. I realise the correct solution is to have it all ripped out and done properly, but that's going to cost thousands, which I haven't got.

At the moment, I'm managing with a thick polythene sheet duct taped around the walls and overhanging into the bottom of the shower tray. This works fine, but need re-doing every so often. So, I'm just looking for some ideas, no matter how crazy, for something a little more permanent. I don't care how it looks. Surely, there must be some kind of "liquid rubber" type product that I could just paint on? I know such products exist for use before tiling, so is there nothing that could be used after tiling?

Many thanks for reading, and any suggestions would be most welcome, no matter how crazy. As I say, I don't care how it looks.

 

[shooey]

Sorry - posted this in the wrong section. I've now reposted in the tiling forum, so please ignore.

P.S. If there's a way to delete this, just let me know and I will.