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Guard Hardener W – Strengthen and Waterproof Concrete, Stone and Brick

Strengthens weak concrete, stone and brick while making them water-repellent. Ideal for damp areas, outdoor walls and exposed floors. High-performance surface hardener and waterproof.

Guard Hardener® W strengthens weak, porous concrete, stone and brick while also protecting them from water.

Impregnating product: It penetrates deep into the material to restore strength and cohesion in damaged or ageing areas. At the same time, it creates a long-lasting water-repellent effect that limits water penetration and reduces damage caused by moisture.

This dual action makes it especially effective in areas exposed to rain, damp or repeated wetting and drying cycles. It helps prevent common issues such as cracking, erosion, frost damage, moss growth and salt deposits.

After application, treated areas become harder, more resistant and less sensitive to water, while keeping their original appearance.

Guard Hardener W is suitable for both indoor and outdoor use, including facades, walls, floors, terraces and basements exposed to moisture.

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  • Beading effect
  • 10 years guarantee
  • Floors, facades
  • Coverage (1L = 6m2)
Advantages
  • Consolidates brittle materials at the surface
  • Dust protection effect
  • High protection against water and frost
  • invisible: does not change the colour
USE
  • Dry or damp porous materials: cement motor or plaster, concrete, natural stone, brick, coating, etc.
  • Facades and floors
  • New or old
  • Internal and external
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Advantages
  • Consolidates brittle materials at the surface
  • Dust protection effect
  • High protection against water and frost
  • invisible: does not change the colour
USE
  • Dry or damp porous materials: cement motor or plaster, concrete, natural stone, brick, coating, etc.
  • Facades and floors
  • New or old
  • Internal and external
Application
Application tools
Packaging
Technical documents

Surface preparation :

  • 1
    Apply the product to a clean surface.
  • 2
    Depending on the brittleness of the material, clean manually using a brush or chemical.

Application :

  • Use the product in its pure form, do not dilute.
  • Shake the packaging well before use and perform a preliminary test to check that the product has correctly penetrated and the appearance after drying.
  • The material must be impregnated up to saturation in a single coat or two coats “wet on wet” depending on the porosity.
  • Do not overload the material, remove any excess before drying. Risk of white marks.
  • Optimum efficiency reached after 2 to 7 days of drying.
  • The treated material cannot be covered by another coating.

For further information, refer to the data sheet and safety sheet.

  •

    Apply using a low-pressure sprayer, roller or brush.

  • 5L

  •

    Technical data sheet

  •

    Safety data sheet