Bailey Pegasus shower wall splitting

Hi all,

a month or so ago in my well cared for Pegasus 514 I noticed a small split appeared on the curve of the shower wall .. it was only small and I purchased some clear double sided Gorilla tape, .seems to have done the trick .Yesterday preparing for a forthcoming trip I went for the clean up .looked at the shower wall and there was the start of another split from the top.as I touched it it started to run downwards. Not Good…I looked on the caravan talk page and found a photo of someone’s repair it was a pane 700 wide and full height and said it was 1.5 mm thick .I think the company has changed name to Access Plastics Ltd.  My thought was to use this and then over cover the full shower wall with another material..

It seems that after time this plastic,which is so thin,  as used by Bailey had gone so brittle and probably the movement on the road has started it off. Having searched the various caravan chat pages I see I’m not the only one who has suffered this problem. If anyone has some ideas please let me know.