Algae on facades

The problem of micro-organisms such as algae and fungi on facades has massively increased in recent years. The main reasons are lack of insufficient facade protection and stricter requirements for energy-saving measures. Characterized the temperature is lowered to the facade surface and increases the risk of condensation. In addition resulting precipitate moisture dries much slower. This results in better conditions for algae and mold growth, which means an undesirable visual impact of the exterior surfaces.

With algae and fungi facades are affected by external heat insulation mainly. In contrast to the massive masonry exterior insulated walls have a lower heat storage capacity, the thin outer plaster cools down quickly because of the heat supply is prevented from building here. The result is that the walls hardly dry out especially on the majority side facing away from the sun. There is also the risk of condensation on the sub-cooled wall surface. Precipitation moisture supports and accelerates this infestation.


What to do in the algae on the facade?

If the top coat is still intact, enough to thoroughly clean the infection with appropriate cleaning agents. At most, the cleaned surface should still being disinfected for a re-vegetation (with invisible solution).

If the facade repainted / coated, should be rehabilitated with a system: cleaning, disinfection, primer, top coat. With a system solution, you are on the safe side and will have years of enjoyment from a beautiful and protective facade.


If you are unsure what to do or would like a review of the facade?
Then get in touch with us, we are happy to advise you in these cases.
Due to our many years of specific experience, we can offer you these services cost-effectively.


Flyer Algae und fungi
Flyer Algae and fungi.pdf
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