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KEIM AquaROYAL system: Sustainable facade protection

KEIM AquaROYAL is a closed render and coating system for facade insulation which is characterised by the exactly coordinated, hygrothermic behaviour of the individual coats.

Facade protection in harmony with nature - building physics instead of biocides

It is often a common mistake that biocides are used in all facade insulation materials. It is unfortunate that actually biocides are widely used as a supposedly cheap solution to the build-up of algae - eventually effecting nature, the surroundings in which you live and even your garden. The effectiveness of biocides on facades is actually very limited. On average, all traces are lost in our environment after about four years.. If you then have to retouch the biocide coat with a further one, the cheap facade soon becomes very expensive. 

Many years of practical experience have shown that ETICS in combination with our KEIM AquaROYAL system significantly reduce the risk of algae and mould growth on surfaces. KEIM AquaROYAL has redefined the benchmark for sustainable faรงade protection. The mineral insulation system uses the laws of building physics to minimise algae and fungal infestation on facades as far as possible. Moisture prevention instead of biocide use - for clean facades and a clean environment. Because the future needs responsibility!

Proof of the fulfilment of the highest demands on environmental, health and usage properties we received for our KEIM AquaROYAL-MW system the "Blue Angel" award.


Advantages of KEIM AquaROYAL


  • Algae and fungus prevention without biocides
  • No added preservatives and solvents 
  • No leaching of pollutants
  • No moisture damage - permanently dry masonry
  • Maximum weather resistance 
  • Unmatched colour fastness 
  • Safety due to non-combustible building materials 
  • Healthy indoor climate all year round 

How does AquaROYAL work?

KEIM AquaROYAL is a closed render and coating system which is characterised by the exactly coordinated, hygrothermic behaviour of the individual coats. The guarantee for the functioning of the KEIM AquaROYAL system is the strict allocation of the individual components. The base coat, finishing coat and paint are clearly defined and can neither be combined at random nor used in different thicknesses. "Hydroactivity" is the term for the interaction of the different layers in the moisture balance.

And it is based on the exactly adjusted behaviour of the individual coats. The overall higher render thickness means that the significant functions are transferred onto individual coats, through which protection against the elements is guaranteed by the base render, while the top render and coating can absorb and intermediately store moisture, if necessary.

The capillary-active moisture transport within the top render layer and the high diffusion ability of the coating ensure an unrivalled drying rate. By using mineral renders and paints, the KEIM AquaROYAL System also scores points due to its particular colour-tone stability, a reduced tendency to get dirty and, depending on the insulation material chosen, first-rate fire protection.

Dry faster - beautiful longer

The hydroactive principle of action

Moisture promotes algae growth. Insulated facades are more affected by this because they are colder on the surface and therefore damp for longer. Product systems must therefore be coordinated in such a way that driving rain is drained away via the facade and condensation cannot form. KEIM AquaROYAL fulfils these requirements in an outstanding manner.

KEIM AquaROYAL is suitable for all substrates

  • Brickwork
  • Aerated concrete
  • Vertical coring brick
  • with and without render respectively
  • Adhesive tensile strength 0.08N/mmยฒ
  • on panel materials in a wood frame design in accordance with Z-33.47-727

(Please pay attention to the respective system and dowel certifications)


The design possibilities offered by the KEIM AquaROYAL system are almost inexhaustible. Even colour-intensive, dark tones can be perfectly implemented. Creative techniques enable a wide range of surface designs, and a wide variety of material combinations create effective looks to contour building shapes or structure faรงades. 

Exterior paints

KEIM AquaROYALยฎ-Color

Discover the matching colour system!




Find out how our system KEIM AquaROYAL prevents algae!

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