Water-repellent water based, polysiloxane emulsion

Krystaline RAINPROOF is a very low viscosity water based polysiloxane emulsion with superior penetrating power and enhanced water-repelling effect on porous mineral substrates.

When applied, Krystaline RAINPROOF reacts with moisture in the pores and capillaries of the treated construction material.

Improves aesthetics, reducing efflorescence, preventing entry of dirt into pores and facilitating maintenance.

After curing, Krystaline RAINPROOF is waterproof, resistant to chemical agents, frost and weathering, and is water vapour breathable.

Features & Key Benefits

  • Water-based, solvent-free
  • Easy application
  • Alkaline pH resistant
  • Good penetrability on porous substrates
  • Impermeable to liquid water
  • Permeable to water vapour
  • Weatherproof
  • Does not change appearance of the treated materials
  • Improves resistance to freeze-thaw cycles
  • Protects against efflorescence
  • Vertical and horizontal application

Typical Applications

Krystaline RAINPROOF makes porous building materials water-repellent:

  • Concretes
  • Absorbent ceramic tiles
  • Mineral plasters
  • Brick-faced facades
  • Masonry materials; bricks, mortar, blocks, tiles...
  • Fiber cement sheeting
  • Natural stone


Recommended consumption of Krystaline RAINPROOF is 0.15 to 0.4 kg/m² per layer, depending on absorptive capacity of the building material being covered.