What is the insulation value of screed?

A screed without insulating filler has an 'insulation value' of between 1 and 1.3 W/mK. Which means that screed is more likely to transmit the cold or heat, rather than insulate.

Climate-neutral floor construction
FIT - Flanders - State of the Art Agentschap Innoveren & Ondernemen Vlaanderen Circulair  content= Made In Belgium EIT Climate-KIC Netwerk Ondernemen PMV