Case 1

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Remedial

  • Wash off with high-pressure water jet.
  • Dry or wet scrubbing can also help to remove biological growth [1]
  • Dry the surface and treat with biocide.
  • Apply water repellents to minimise water retention on the brick surfaces after the biocidal treatment.
Removing algae from external facades — Weber Renders & Decorative Finishes – Courtesy of
Saint-Gobain Weber UK & Ireland