I wish plumbers would stick to pipes.
In the past 10 yrs I've been trading, every single time I come across a "wetroom" (deliberate quotation marks) installed by a plumber - it invariably needs re-doing.
Why oh why oh why do people assume that wetrooms come under the banner of plumbers?!
The heating eng. I work with is a close mate and a great plumber - but he's an utter moron still when it comes to wetrooms. He just won't learn.
I'm sure there are great plumbers out there who can prepare a wetroom properly.
My opinion is that they just don't realise that they are all tilers in the wrong body.