‘In uninsulated floor construction, the protection must be achieved using a minimum 50mm sand and cement bonded screed cast over a sharp sand blinded final coat of IKOpro Synthaprufe Original.
Latex levelling compounds and fast flow screeds must not be used directly over IKOpro Synthaprufe Original. The product cannot be tiled or covered directly with floor coverings i.e. carpets, vinyl, laminate flooring.’
The information is in the product datasheet, attached for reference.