Screed Additives


AptiScreed is designed to provide low shrinkage and high early strengths to semi-dry screeds that allow foot traffic after 12 – 24 hours and high levels of compressive and flexural strength after 7 days.


AptiScreed is a high specification plasticising and water reducing admixture for cementitious semi-dry screeds. It is recommended for use in internal and external screeds on which ceramic, natural stone, parquet, resilient, carpet, etc. is to be applied.


  • Low shrinkage.
  • Allows foot traffic after 12-24 hours.
  • High mechanical strengths at 7 days.
  • Produces a Cat A, C40, F7 Screed.
  • Compressive strengths of up to 60N/mm² can be achieved.
  • Ideal for underfloor heating, allow 15 days curing prior to commissioning heating.
  • Internal and external applications.
  • Improved finishing from action of superplasticiser.
  • Low odour, low VOC content


The mix must have a screed mortar consistency that when tamped becomes compact with a smooth, cohesive surface with no surface bleed. Screed mortar may be mixed with a planetary mixer, standard site mixer, worm-screw mixer, mixer truck or automatic pressure pump.

AptiScreed is supplied in 10 Litre and 25 Litre canisters, 200 Litre drums, 1000 Litre IBCs and in bulk tankers.

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