This is the most inovative system in renovation, is easy to install because is a knuckled slab
The tube diameter is 12×2 choice PE Xa or PE-RT (both with evoH oxygen barrier).
Distribution you have to choice between simple manifold and group with reduction temperature (fixed point or with external probe control).
Screed at least 15 mm. (above the knuckle of the slab), is the best on the market now, is totally natural and much liquid self-leveling.
Is obtained by simple grinding of the ore natural anhydrite, with addition of pure calcium carbonate.