CA flow screeds must be abraded, vacuumed and, as with all calcium sulphate substrates, primed with ASO-Unigrund. Heated screeds must be commissioned to recognised technical regulations before installing finishes. The readiness to receive floor finishes is determined by a CM device (carbide hygrometer). (CA screeds without underfloor heating: 0.5 CM%, CA screeds with underfloor heating: 0.3 CM%).
NOTE: Ensure that there is no rising damp coming from the substrate. This type of installation does not comply with the generally recognised rules of technology and must be contractually agreed separately.