Preparation Laid Insulation Boards Without Adhesive

[Old Mod]

I think it's Ekoboard? Says Thermopanel on the box! After the advice above I pulled it all up this evening! As you can imagine it was easy! Just pulled it up in huge panel size chunks!

I have MAPEI keraquick S1 rapid set flexible adhesive for the tiles. Can I use this to stick the insulation boards down?

And I'm using MAPEI Ultrplan renevation screed 3240 fibre reinforced self levelling compound to screed over the UFH mat. I'm I ok with this?

Cheers for your help guys!

Yes that's fine.
Floor Insulation for underfloor heating - EkoBOARD - uses & applications