Install underfloor heating yourself or hire a plumbing technician

[TD="class: bg2, colspan: 2"] Hello everyone,
How much does floor heating cost per m2 approximately?
Can you install it yourself and have the heating engineers connect it, or is it for professionals (if problems occur later, they do not provide a warranty)?
Can you make mistakes when installing it, or is it not complicated?
Which material is the best?
Is it worth installing in a 15m2 bedroom, or is it better to have radiators (does it work with over 50° or not)?
Those were my questions as I don't have much knowledge.
Thanks in advance

Hello,

[TD="class: bg2, colspan: 2"] Those were my questions where I don't have much knowledge.
Thanks in advance

This is hard to overlook. First of all, have everything properly planned/dimensioned. That will clarify all questions. By the way, this also applies to the ventilation!

best regards

That is clear. But I hope to get some information from the forum now. Thank you;)