AptiCem HydroStop

AptiCem HydroStop is a reactive liquid emulsion admixture, designed to impart a high degree of water repellence in concrete mixes, significantly reducing water absorbency.  It reacts chemically with calcium hydroxide in the concrete to form a water repellent resin within the concrete pores.

Occurrence of efflorescence is significantly reduced when using AptiCem HydroStop as an integral water repellent.


  • Effective protection against driving rain
  • Significant efflorescence (leaching) reduction
  • Alkaline-resistant
  • Low odour and VOC content

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