I want a prefabricated shower cubicle for use on a floor with bouncy castle-like properties of horizontality,[1] rigidity and flatness. Therefore, unlike many of them, it cannot rely on rigid connections to the walls. Presumably some flexible sort of safety chain would be ok. There isn't even a solid wall I could bracket it to, assuming that were possible.
Other requirements are that it has to be dismantleable so it can be taken upstairs through the gaps between floor joists, and it should have one horizontal dimension of at least 75cm
Has anyone got any suggestions? I have in mind a mains pressure mixer valve from a combi boiler supply, though I suppose I could consider an electric shower. I am not sure a second one on a 60Amp mains supply is ok even with diversity though.
Oh, and it would be nice if it were cheap, not too heavy and waterproof!
[1] I presume I can correct for initial slope so it moves about a horizontal initial position.