I've been watching youtube videos of hot welding vinyl flooring in wetrooms.

https://www.youtube.com/watch?v=nkypVuDf9ZU

There's some expensive kit used, and it seems skilled, so may be a time to get in an expert for a few hours work.

Could the vinyl go up the walls of a wet room instead of tiles?

Then instead of all the hassle of tiling and grouting everything could be done in a few hours.

And I think this would be a lot cheaper than a conventional wetroom
like this one:
https://www.youtube.com/watch?v=Mdl8bzlp-5o

Is there any reason against doing this?

and where would i find someone good at welding vinyl?

George