SilADMIX is a silane-siloxane based water proofing admixture for pressed concrete products. The admixture provides superior water repellence throughout the entire concrete product.


10L per Cubic M of Concrete – can be varied from 5 – 15 depending on intended result


Concrete water proofing admixture




Permanently blocks pores, hardens and dust proofs

Key Advantages

  • Significantly reduces water absorption, efflorescence and chloride ion ingress
  • Provides excellent resistance to water-based staining
  • Remains permanently bonded to the concrete and cannot be washed out UV stable, high wear resistance, long life
  • Provides fungal and algal resistance
  • Does not alter the concretes appearance
  • Easy to use in any existing process
  • Does not leave an oily residue
  • Water based, solvent free & environmentally friendly
  • The degree of water resistance can be varied with addition rate

Typical Data

  • Appearance: Milky white liquid
  • Specific Gravity: ~1 g/ml at 20degC
  • pH value: 7 – 8
  • Solubility in water: Dispersible
  • Flash point: Not flammable
  • Shelf life: 1 year in unopened containers under 25degC


It is important that the applicator performs small trials before commencing large scale batches.

Dosage: The recommended dosage rate is 10 L SilADMIX per cubic metre of concrete.The rate however, can be varied from 5 – 15 L per cubic metre of concrete to attain the desired water repellence properties.

Addition: SilADMIX can be added to the concrete mix without dilution and should be mixed well before use. It is best to spray SilADMIX into the concrete mixture while blending to achieve effective coverage in the mixture.

It can be added just prior to, with or after the concrete batch water. The total amount of water added should be adjusted to account for the added SilADMIX.

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