– Remove all surface contaminants either by washing, scrubbing or high-pressure water jet. 
– Allow the surface to dry completely before painting.

– Remove all algae or fungus growth by a high-pressure water jet or scrubbing.

– Allow the surface to dry completely before painting.

– Remove the powdery materials complete by using a high-pressure water jet. 

– Allow the surface to dry completely before painting.

– Remove the powdery materials complete by using a high-pressure water jet. 

– Allow the surface to dry completely before painting.

– Smoothen surface and scrape off loose material with sandpaper. 
– Surface to be painted must be cleaned thoroughly and dry. 

– Wash off the affected areas thoroughly by using a high-pressure water jet to ensure that white salt deposits, dirt and dust are removed before any subsequent painting. 
– Allow the surface to dry completely before painting.

– Clean the wall thoroughly in a circular motion with a wet cloth.

– Use clean water and rinse the cloth frequently after wiping.

– Repeat the steps until water is clear after rinsing.

– Leave the wall to dry completely before painting.