Underfloor heating pipe... Which one?

[theflyingpig]

Crikey, there's alot of underfloor heating pipe on the market.... How to choose?
It's a small boot room /utility and small bathroom. We're knocking out old concrete floor and will be building up with glass foam and a limecrete screed.....

I'm thinking 12mm pipe will be sufficient, any reccomendations?

Thanks!

 

[Madrab]

Not really - they're all a much of a much - just use PEX and it should be fine.