Surface preparation: Kober - washable and decorative paints.

Surface preparation

Preparing the masonry surfaces


Plastered new interior surfaces:

  • Smooth them with circular movements using a pumice stone, a well-burnt brick or a piece of fir tree board. For large areas use electric sanders;
  • Open the cracks using a knife and fill them with cement paste plaster or other filling-leveling materials;
  • Sections of plaster that are unstable when tapped must be completely removed, until you reach the masonry surface;
  • Restore the plastered surface using cement paste, plaster or mortar, making sure you’re using similar materials as the surface
  • The temperature must be at least 5°C throughout the work;
  • Allow the fresh plaster to dry for at least 24 hours before applying the finish coat.
  • Surfaces that have been painted before:
  • Verify the plaster surface by tapping it;
  • sections of plaster that fall off must be restored; repair the damaged corners using appropriate materials;
  • old, loose paint must be completely removed using a stainless steel spatula, a wire brush, sandpaper or other dedicated tools;
  • clay paints must be completely removed;
  • areas affected by fungi or mold must be thoroughly impregnated and cleaned using special cleaning products. Allow to dry completely;
  • any potential repairs shall be carried out using appropriate materials;
  • remember to remove the sanding dust.


Priming exterior and interior surfaces: 

  • this procedure is performed in order to impregnate the surface and to anchor the coat of paint already applied on the wall. This operation is necessary if said paint of coat is strong enough and it does not peel;
  • priming creates an uniform absorption of the surface and increases the adhesion between the applied product and the wall;
  • it is necessary to apply an additional coat of primer on the new and/or newly repaired surfaces. In this case you must follow this one mandatory step: apply at least one coat diluted 1:5 with cold and clean water.


Preparing the wooden surfaces:

  • remove any traces of mud, dust, grease and any other particles;
  • first you have to clean the cracks using the spatula, then fill them with putty, cut the nods and, in the end, remove the resin drops;
  • if the surfaces have been previously painted remove the old paint by sanding it along the fiber. It is recommended that you use medium-grade sandpaper. In the case of the opaque system remove only the sections with low adhesion to the surface;
  • remove the areas infested with fungi, mold, etc;
  • sand the surface along the fiber using medium-grade sandpaper;
  • remove the dust from the surface.


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