how to prepare for wet underfloor

[adros88]

Hi. I am planning on installing wet underfloor heating before tiling my kitchen. I currently have solid concrete floors. Made up of 30mm screed, 150mm concrete oversite, then 300mm of rejects. How much do I need to excavate and what depths of insulation and concrete do I need to put back?

Anyone recommend a goos heaing brand/system?

Cheers

 

[adros88]

that last bit should say "a good heating brand/system"!