Admixtures for sand/cement screeds


HD-Accelerator ULTIMATE

High-strength screeds up to CT-C40-F7 and ready-to-lay from 4 days

CONTOPP® Ultimate 4


  • Quick to dry semi-dry sand/cement screeds within 4 days
  • Increase in strength through synthetic hardening
  • Load-dependent reduction of the screed thickness down to 30 mm
  • Contains tracer for a subsequent half-quantitative analysis in sand/cement screeds
  • Rehydration protection

Application area

  • To produce bonded and floating cement screeds.
  • To produce screeds on underfloor heating.
  • Suitable for damp and external areas.
  • EMICODE EC1plus

You can call us at +49 9324 91990

Consumption calculator

for KNOPP products

Please refer to the technical datasheet under DOWNLOADS for more information about handling and mixing ratios.