Do I need a Ditra Matt on c30 dry screed?

[raffraff77]

Hi guys


We are laying porcelain tiles 120 x 120 on a c30 dry screed on top of wet under floor heating 55m2 and I would like know if we need to use a Ditra Matt or tile straight to screed with a flexible tile adhesive ?

Thanks

Raff

 

[SergeTiler]

Removed

 

[Ajax123]

I seriously doubt itll be a c30 screed but ditra anyway.