12mm gap between shower and panel. How to fix?

[slpn1]

Hello,

I found out our shower was leaking quite badly after the downstairs living room electrics blew. The water was dripping down a panelled fake chimney so I didn't notice. I can see in one corner the silicone has cracked and it looks like the shower has sunk in that corner quite significantly. I'm removing the silicone and the gap is huge, 12mm in places. The panelling also has lots of give when you push it. We're planning to get a new bathroom sometime this year so not too worried about asthetics. Is there something water proof that has a bit of give that I could fill the gap with to tide us over?

Thanks,
Simon

 

[foxhole]

If that’s 50mm you need a new tape measure.

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This bath seal trim from Diall is perfect for protecting your wall against moisture and damage. Made from PVC for durability

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[slpn1]

I guessed 15mm, wrote 50mm, then just measured 12mm. I'm going to bed and will try again tomorrow