sand/cement screeds


Drying accelerators

Reliable ready-to-lay from 4 days and real moisture protection

CONTOPP® Accelerator 20 B


  • Ready-to-lay in 2 – 4 days (40 – 50 mm screed thickness for unheated screeds and 65 – 70 mm for heated screeds).
  • CT-C25-F5

Application area

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

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.