Should do but I use this so can have manual control, works with stock driver ish (clock isnt updated) #Aliexpress £64.94 | Haozee Z Wave Plus Thermostat Floor Heating Control Wireless Electric Heating System Smart Home Automation
I looked at under tile heating for our bathroom but decided it didn't work for us (various reasons).
However I was told to put redundant sensors under the tile in the event one fails. They suggested two, I would have put more.
Just my opinion, but conceptually I would not give any automation system "full authority" over a heating or cooling system. An appropriate smart thermostat where you can set the Max and min temperatures in the thermostat setup menu is a better alternative. This would be a "safety" in case the home automation system went berserk.
Not sure what kind of code over there but for safety reason. You will need a proper underfloor thermostat for over/under temp protection and GFCI protection for short circuit.
Here's one that will work with HE but not sure on your country.