Installation on heated and unheated calcium sulphate screed (CA) with normal residual moisture

Calciumsulfatestrich ca

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: Exclude moisture rising from the substrate.

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Grundieren PRIMING

Solvent free universal primer, water and alkali resistant

Use when installing large format tiles, broadcast with quartz sand whilst the primer is still wet

Ausgleichen LEVELLING

Levelling compound for floors, 2 – 30 mm, in interior areas


Thermally insulating impact sound deadening and de-coupling board, 4/9/15 mm


Flexible, mineral-based, vapour permeable waterproof slurry for areas with increased demands in interior and exterior areas

One component flexible waterproof slurry, wall/floor

Fabric reinforced sheet style bonded waterproof membrane


Creamy consistency flexible adhesive

Rapid hardening, highly slump resistant flexible adhesive for interior and exterior use

Lightweight, low dust flexible adhesive for thin, medium and thick bed installation techniques

Flexible natural stone adhesive

Flexible thin-bed adhesive for CA screeds, prevents ettringite formation


Rapid hardening flexible grout, 3 – 20 mm joint width

Mineral-based multi-function flexible grout for tiles, natural stone and other finishes from 1-10 mm joint widths with FAST TECHNOLOGY

Silicone sealant for movement joints

Silicone sealant for use with natural stone