After removing the mould you have to spray BIOSAL Mould-free to the
cleaned areas up to saturation (BIOSAL runs down the wall) and to
distribute it with a sponge or paintbrush for impregnation, so that the
breeding ground for mould is removed.
Repeat this impregnation after the impregnated area has dried up.
After drying you can paint the wall, by, either mixing BIOSAL Mould-free
into the painting (use Silikatpainting, but not Acrylat or Dispersion)
with a relation of 1: 10 (before painting take care about possible colour
change), or the new surface has to be impregnated once again.