With a spatula, remove the loose material from the surface
Clean the surface with a brush.
Apply SurfaPore C and allow for one week to pass, in order for the moisture pressure to be relieved and for the humidity to evaporate and dry.
Apply Surfamix C as a primer (diluted 1:3 with water). Three hours after priming, if required, re-plaster by using SurfaMix in your plaster mix. Allow the plaster to dry off.
Prime the repaired area using SurfaMix P as a primer. (diluted 1:3 with water)
Apply the appropriate paint: SurfaPaint Thermodry Interior (interior walls) or SurfaPaint Thermodry Exterior (exterior walls).
The surface dries completely within 48 hours of final application.