AQUAFIN-RB400 – The original is back!

The cementitious thick coating AQUAFIN-RB400 is attractive thanks to its diversity. Either for new buildings or renovation, inside or outside, under rising masonry or in the foundation area. Speedy, cementitious building waterproofing without equal, because it’s the right choice for every application.

True professionals trust AQUAFIN®-RB400

You can rely on these unique advantages:

The most important aspect for permanently maintaining a building is protection against moisture. It is imperative to rely on the waterproofing for this. SCHOMBURG possesses decades of experience in this area, and we offer you an assortment of products that are matched exactly to each other.

  • Reactive drying
    Whether it’s rain, snow, cold, or heat - thanks to its reactive setting, AQUAFIN-RB400 stays dry nearly completely independent of climate.
  • Lower drying loss
    AQUAFIN-RB400 is low shrinkage, which means that significantly less layer thickness is lost.
  • Overcoat after 3 hours
    Outstanding product properties ensure speedy building progress.

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Here’s what our customers say about AQUAFIN®-RB400


83% of our product testers rate the product as "very stable".

Smooth consistency

89% of our product testers rate the product consistency as "very good".

Recommendation to others

87% of our product testers recommend the product to others after the first use.

AQUAFIN-RB400 in use

Fast cementitious building waterproofing from SCHOMBURG is attractive not only thanks to its unique product and processing properties, but also because of its diverse applications. In our video, we show you application of AQUAFIN-RB400 using manual and machine processing on concrete exterior walls.

Application areas for AQUAFIN®-RB400

AQUAFIN-RB400 is particularly suitable as waterproofing against splash water in the base area in accordance with DIN 18533-3. The advantage of the product is that no material change is required with surface and plinth waterproofing and the material can be plastered over and painted.

AQUAFIN-RB400 may be used for waterproofing in direct ground against non-pressure water and pressure water in new buildings (separate agreement required against pressure water) as per DIN 18533-3 and in restoration works as per WTA Leaflet 4-6 and as an interior seal.

You can also use AQUAFIN-RB400 as a horizontal barrier beneath rising masonry work in accordance with DIN 18533-3.

AQUAFIN-RB400 is also a proven, watertight connection with floor-deep elements made of wood and plastic, in combination with highly elastic joint tapes of the ASO joint tape series.

Cementitious waterproofing

AQUAFIN-RB400 is characterised by its diverse applications in single and multi-family houses.

For surface waterproofing or horizontal barrier, in the base area, at the toe point, at intersections, or at floor-deep elements - our interactive PDF download shows you descriptively, which application areas are suitable for speedy cementitious building waterproofing and which details need to be considered.

Waterproof securely with AQUAFIN®-RB400

The way to perfect building waterproofing