Installing marmox to concrete floor

[rj1884]

Good afternoon. I've got to tile a downstairs bathroom floor which will be having under floor heating (ditra heat mat ), the substrate is concrete. I'll be looking to overboard with marmox to make the UFH more efficient. My question is is how would you install the marmox, is it a case of just sticking it with adhesives or would you still be looking to get some screws into it as per normal to ensure its properly secured. Also as there is UFH going down what thickness of board would you use. Thanks in advance.

 

[Qwerty]

10mm board fixed using adhesive only. Ensure substrate is sound, flat and primed 🙂

 

[Rookery]

As above