This is in our opinion the best in renovation systems, This system requires a more specialized pose than knuckled, but the advantage is a better insulation and a aluminum radiant slab leading to better thermal performance
The tube diameter is 17×2 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)
Concrete screed at least 45 mm. (above the knuckle of the slab), must be addict with superplasticizer
LA 45