Tiling on Wet/Piped UFH overlay system

[faithhealer]

to ren+ - i am at exactly the same position this week. uponor wet system upstairs, identical!!!
it is solid as a rock, and been overlaid with 6mm ply, am contacting their tech guys tomorrow, but what did you end up doing? i see this is a year or so old this thread, so would love to hear how you went a bout it....
will pm you too
cheers

afraid Ren hasn't been on for over a year either

 

[thegwads]

have pm'd in the hope his email still works...
any other info from guys would be great

 

[Gazzer]

You will be taking a big risk tiling onto 6mm ply. 1, because of the water from the adhesive warping the ply and 2 from the heat from the pipes adding movement expansion and contraction to the ply.

 

[Gazzer]

I would be more inclined to tile diirect to the polyplumb surface than 6mm ply.

 

[aph257]

6mm Ply:yikes: