Change flooring / bathroom with existing wet underfloor heating

[SerialRelocator]

Our house has wet underfloor heating in what was built as an annex but now integrated in main house.

The u/f heating system covers a hall, 2 bedrooms and a wet room. It was installed before we moved in and, unfortunately, we have no further details about it. It does however work.

We would love to change the wet room and it's slate floor tiles into a new shower room.
I have no idea where to start and I am worried that removing the existing tiles / fittings would damage the whole underfloor system, needing all flooring to be lifted?

Does anyone have any experience of this or anyideas on what to expect? Do I just approach a normal bathroom fitter for the works?

I have experience of tjus. Its perilous to say the least.
The tiles need to be carrfully removed in tiny sections so as not to disrupt the piping system(mine is called polypipe). Excess adhesivdvljmps around tfe wate pipes ehuch jeeds catefully grindjng off to level it back fown gor re tiling.
Get a clcery specialist st snd hghly insured tiler. Expect it to take much longer tanhan a stansatd rip out and retile.if domeone tells you otherwise be suspicious. Damaging the pipes wrecks your whole heating system (and can flood your house). The slis the the worst case scenario for a wet underfloor heating system.

There is the possibility the pipes are set into a concrete floor rather than flatedonyop of the floor in a polypipe matting. In this case as long as the tiles areccarefully removed you should be ok as the pipes ate hidden.

Are thefloors the same height everywhere? Do you know if the heating was done when the annex was built and does it have concrete floors?

Thanks @GlamGiraffe. The heating was done when the annex was built. It is also polypipe. The floors are the same height, except for the wet room where it is about an inch higher.

It sounds as perilous as I was expecting!

Sorry, I can't make out what word precedes 'specialist'

Oh i am sorry. Not feeling well and in my brain that made perfect sense! Get a tiling specialist not bathroom fitter. make sure they are experienced, insured and has time. Get references. Im in london and can give you details of who did mine if it helps. It needed to be redone because the original tiles were broken and was scary.

Thanks. I'm on the other side of the country unfortunately.

I wonder whether it would be possible to sort of clamp off a section of piping, to prevent everything getting flooded if it goes wrong?

I don't actually know how many circuits the system is made up off.
We hate this wet room but keep living with it out of fear!

The pipes are definitely all connected. The problrm is a tiny leak caused will become a big probkem over time. Its scary but us posdibke if the oeople know exactly what they are dealing with. I used these guys, it wasyears ago now, www.arrowtilingltd.co.uk/services but they are London based. You may need to ask around repurable tile merchants gor their best tilers. There is slso something called the trade tile association TTA whi may be able to recommend very good tilers for complicated jobs (it could be where we got ours, i dont remember)