Thanks for all the above.
I had a chat with the bathroom fitter about UFH at the beginning of the process, during which he helped me to talk myself out of UFH. Things mentioned included:
- it’ll only warm the floor, not heat the room (fine, there will be a radiator / towel rail, it’s not a big room, and doesn’t get particularly cold. On the other hand, feasible size of said rad is limited)
- running costs, because you won’t be able to just “use it for short periods” as it takes time to warm up. Also, most inefficient to use UFH that way (dunno on this one)
- if it breaks etc. (Well in the course of talking about that he partially negated his argument by telling me about UFH setups that can tell you via an app where the break is. Guess it depends on how reliable these things are and correct installation)
I’m leaning towards getting it.