They are flexible to a degree but don't try to bend them in half obviously.... do you need the full 2.4m or can you cut them to size first downstairs ?
Do you know why the tiles are falling off?
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What substrate re they attached to? (plasterboard/plaster/cement board etc)
Have you considered large form tiles? - I was in a stone suppliers looking at worktops and he showed me some amazing 1200x1200 tiles that were gorgeous and I recall them actually not being as expensive as I was expecting. For my bathroom refurb I was considering glass walls, but these tiles have really turned my head.
For me, the shower boards feel very cheap and nasty in situ, even though they are actually hideously expensive.
If the tiles are falling off then it's very likely the plasterboard is knackered.
I also think the boards look and feel very cheap, remind me of a caravan. Would be OK if they were cheap, but they often cost more than tiles as they're the in thing.
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