How to avoid Algae growth on façade coatings?
• Algae discolor and damage paint façades Algae spores are present everywhere and need only water, CO2 and sunlight to grow on painted surfaces where paint additives provide them with food sources. Algae exist in different versions and form green, black or orange mats, very difficult to remove. Algae cells fill pores and other holes where they cause aesthetic problems and damages due to their capacity to stock water. Algae strains are able to attack your façade followed by a striking obsolescence of your building. Further, they are responsible for the growing of other micro-organisms and for product discoloration. Protection of the dry-film from algal disfigurement has become a growing trend in the paint industry and paint manufacturers are looking for efficient algicide. • Factors supporting Algae growth on façades Humid areas: close to the seaside/lakes/rivers/hillside direction/trees/plants Shady sides: north, north-west façades External thermal insulation Missing canopy Deposition
