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Biomimetic facade paint protects buildings in the long term

What’s behind biomimetics at Sto?

The idea of using nature intelligently

StoColor Dryonic® – Beautifully dry, come what may

Facades are constantly exposed to weather conditions, including dew and rain. This leaves them at risk of being infested by nasty microorganisms, especially if they are located near trees, shrubs, or water. But Dryonic® Technology deprives such microorganisms of the nutrients they need to grow, ensuring that dew and fog simply run off in no time. Additional intelligent technologies protect the facade against fading or getting too warm in the sun.

Would you like to find out more about biomimetics at Sto?


We would love to hear from you – whether you're an applicator, facility manager, building owner or maintenance manager!

We will be very happy to send you further details. Our test set gives you the chance to put our Dryonic Technology to the test for yourself.
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Do you want to put biomimetics to the test for yourself? We will be very happy to send you further details and a test set for free.

Find out our contact details here.
  • Modelled on nature

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    The fog-basking beetle collects precious drinking water.

    The fog-basking beetle from the African Namib desert was the inspiration for StoColor Dryonic® facade paint. This creature has been blessed with long hind legs to help it collect water. When fog drifts across the sand dunes early in the morning, it lowers its head and raises its rear. This allows the fog condensing on its shell to run directly into its mouth.

    The only reason that this headstand technique works so well is that the shell on the back of the fog-basking beetle is covered in no end of microscopic dimples. The hydrophilic tips allow for the water to condense and the gaps in between ensure that it runs off. This microtexture was taken as the inspiration for StoColor Dryonic® using binders and fillers. It works on virtually all conventional construction substrates, including render, concrete, brick, metal, clay tiles, fibre cement slabs, timber, and plastic.

  • StoColor Dryonic® at a glance

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    A facade with Dryonic® Technology is nice and dry, come what may

    • Very quick drying after rain and dew formation
    • Biomimetic principle for dry facades to protect against algae and fungal attack
    • With or without biocidal film protection
    • Extremely wide colour shade variety and high level of colour stability
    • Minimal extender material breakdown (not easily scuffed)
    • Can be applied to virtually all conventional construction substrates
    • Slight silk gloss visible depending on angle
    • Optionally available with heat shield against solar heating (X-black Technology)

    Classes in accordance with EN 1062-1:

    • Water vapour diffusion: V2 (medium)
    • Water permeability: W3 (low)
    • CO2 permeability: class C1 (inhibiting)

  • Water management on facades – the scientific proof

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    The results of the test for comparison: a standard paint on the left and StoColor Dryonic® on the right.

    Fraunhofer LBF in Darmstadt has tested five facade paints for their ability to drain off condensed surface water. The measurements clearly demonstrate that StoColor Dryonic® drains off the water the quickest while hardly absorbing any moisture.

    The key question was how quickly condensation runs off a cool, vertical surface. With StoColor Dryonic®, the answer is two hours. All of the other paints put to the test took at least three hours.

    Testing the panel weights also confirmed that the most water did indeed drain off with StoColor Dryonic®. With the silicate emulsion paint tested, the effect was actually the opposite. After five hours, the layer of paint had absorbed all of the water.

  • One paint for all substrates

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    Almost all conventional construction substrates can be coated with the Dryonic® range of paints:

    1) StoColor Dryonic® for cement shingles
    2) StoColor Dryonic® for roof tiles
    3) StoColor Dryonic® as a finish on external wall insulation systems
    4) StoColor Dryonic® with X-black Technology to prevent intense colour shades from heating up in the sun (FT 37100)
    5) StoColor Dryonic® for galvanised sheet metal, plastic substrates, and aluminium substrates
    6) StoColor Dryonic® Wood for semi-dimensionally stable timber substrates
    7) StoColor Dryonic® for fair-faced concrete
    8) StoColor Dryonic® for gutters
    9) StoColor Dryonic® S for HPL boards, also available in RAL colour shades
    10) StoColor Dryonic® Wood for roof soffits

  • UV protection preserves the intensity of colours: StoColor Dryonic® S

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    The sun makes facade colours fade. That is a natural occurrence. But that all changes with StoColor Dryonic® S, as its integrated SunBlock Technology protects facades from fading caused by UV rays in the sun. Even intense colours are preserved in the long term. This means that you have full flexibility when choosing colours. StoColor Dryonic® S has been proven as one of the most effective facade paints on the market. Bask in the power of colour!


    At a glance

    • Biomimetic principle for dry facades to protect against algae and fungal attack
    • Extremely wide colour shade variety and high level of colour stability thanks to SunBlock technology
    • Very quick drying after rain and dew formation
    • Without biocidal film protection
    • Extremely wide colour shade variety and high level of colour stability
    • Minimal extender material breakdown (not easily scuffed)
    • Can be applied to virtually all conventional construction substrates
    • Slight silk gloss visible depending on angle
    • Optionally available with heat shield against solar heating (X-black Technology)


    Classes in accordance with EN 1062-1:

    • Water vapour diffusion: V2 (medium)
    • Water permeability: W3 (low)
    • CO2 permeability: class C1 (inhibiting)

  • Natural protection for wood facades with StoColor Dryonic® Wood

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    StoColor Dryonic® Wood has been developed with demanding wooden substrates specifically in mind. The paint has an isolating effect against many wood constituents and also protects against causes of discolouration, such as algae and fungal attack. Equipped with SunBlock and X-black Technology, it stops damage being caused by UV radiation and overheating. The wood stays nice and pristine for a long time. Application is speedy and straightforward, with StoColor Dryonic® Wood inhibiting problematic wood constituents. There is no need for an intermediate coat.


    At a glance:

    • Dryonic® Technology: biomimetic principle for dry wood facades to protect against algae and fungal attack
    • Very quick drying after rain and dew formation
    • SunBlock Technology: for maximum colour shade variety and colour stability
    • X-black Technology: keeps temperatures below 65 °C when exposed to solar radiation, even with dark colour shades
    • Isolating effect against many wood constituents
    • For semi-dimensionally stable and non-dimensionally stable wooden substrates, except framework
    • High level of resistance to mechanical stress
    • Silk matt surface
    • Retains the texture of the wood

  • Biomimetics. Our step ahead.

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    At Sto, we have been developing products based on the most efficient solutions from nature for 20 years. Our inspiration: 3430 million years of evolution – constant optimisation through further development. The benefit to you: radiant colour intensity, lasting UV and weather protection, facades that clean themselves, and a longer lifecycle for your buildings. We offer cost-effectiveness and ecology combined. This is what we mean by Building with conscience.

  • How a new generation of paints protects itself

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    Facade paints in our iQ – Intelligent Technology generation have special properties, with their surfaces protecting themselves against rain, soiling, fading, heat, and so much more. And there is no sign of biocidal film protection. Here at Sto, we have more than 160 employees working on environmentally friendly innovations like this in our Research and Development department. A whole three per cent of our turnover is allocated to this area.

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