Floor screed

I am installing a heated floor and need to screed over the pipes.
Has anyone any experience?
Do the self levelling screeds work and is it something I can do myself....?

I didn't find the right solution from the Internet.

References https://thefarmingforum.co.uk/index.php?threads/floor-screed.103592/

Brand Video Example
Screed with sharp and cement 75mm roughly? That's what most wet ufh systems i come across are. The fact your asking probably best leave this to someone else.
If it's big the you would need a s**t ton of self levelling. There may be other options but again might be out of your capability?
I wouldn't put traditional screed over UFH, flow screed all day long, less thickness and quicker. Just sub it out