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Recipe: Wall Paint: Lime Casein Wall Paint, white

Casein is the most important protein component in the milk. It is available as pure casein powder, but it can also be prepared from lowfat quark, though not every quark is equally suitable. In order to turn casein into a strong and glutinous glue-like binding medium (for both paint and glue), it has to be mixed with an alkaline component, such as Pit Lime, Borax, or Ammonium carbonate: Note that the kind of alkaline ingredient used also determines the suitability of the casein paint for certain applications. Lime-casein is most suitable for wall painting. In contrast to borax-casein or ammonium carbonate-casein, lime-casein is largely weatherproof. Small additions of casein to lime colors enhance their weatherability and abrasion resistance. There is only one disadvantage: Lime-casein needs to be used up the same day! When working with lime-casein, you must use pigments that are fast to lime/lime-stable. Casein is suitable for the following surfaces: paper, woodchip, glass fiber fabric, gypsum cardboard, gypsum plaster, lime plaster, lime-cement plaster.

Processing

Basic recipe for Casein-lime solution: 40 g Casein (#63200), 125 ccm Water (cold!), 33 g Slaked Lime (#31800). Place the casein powder and the water in a mortar or mixing dish. Step 1#176: Basic recipe for Casein-lime solution: 40 g Casein (#63200), 125 ccm Water (cold!), 33 g Slaked Lime (#31800). Place the casein powder and the water in a mortar or mixing dish.
Cover it, and let it to soak for several hours in a warm place. It is best to leave the mixture overnight in order to make sure that the casein swells completely and absorbs as much water as possible. Now the casein paste is hydrolyzed with the Pit Lime. This recipe never fails to make a good, thick casein glue of even consistency. Step 2#333: Cover it, and let it to soak for several hours in a warm place. It is best to leave the mixture overnight in order to make sure that the casein swells completely and absorbs as much water as possible. Now the casein paste is hydrolyzed with the Pit Lime. This recipe never fails to make a good, thick casein glue of even consistency.
However, the disadvantage is that it gels even faster than casein glue made from fresh curd and must therefore be used up as fast as possible. The formation of gel can be avoided by diluting with water by filling up to a total volume of 1 liter. The resulting solution is a 4% lime-casein-solution. Step 3#298: However, the disadvantage is that it gels even faster than casein glue made from fresh curd and must therefore be used up as fast as possible. The formation of gel can be avoided by diluting with water by filling up to a total volume of 1 liter. The resulting solution is a 4% lime-casein-solution.
Wall Paint: Lime-Casein Primer: (Ingredients: 1 liter 4% lime-casein solution (see basic recipe), 9 liter water) Very absorbent surfaces have to be primed before painting them with casein paints. As a primer, you can use a thin casein solution: Dilute the 4% lime-casein solution with 9 parts water. Apply this primer thin and evenly on the wall. Step 4#352: Wall Paint: Lime-Casein Primer: (Ingredients: 1 liter 4% lime-casein solution (see basic recipe), 9 liter water) Very absorbent surfaces have to be primed before painting them with casein paints. As a primer, you can use a thin casein solution: Dilute the 4% lime-casein solution with 9 parts water. Apply this primer thin and evenly on the wall.
Wall Paint: White Lime Casein (Ingredients: 1 liter 4% lime-casein solution (see basic recipe), 1 kg pigment e.g. Titanium White (#46200) or Chalk from Champagne (#58000) or any other lime-stable pigment) Mix 1 liter of 4% lime-casein-solution with approximately 1 kilogram of pigment, e.g. Titanium White or Chalk from Champagne or a mixture of both. The wall paint should have a spreadable viscosity. Step 5#408: Wall Paint: White Lime Casein (Ingredients: 1 liter 4% lime-casein solution (see basic recipe), 1 kg pigment e.g. Titanium White (#46200) or Chalk from Champagne (#58000) or any other lime-stable pigment) Mix 1 liter of 4% lime-casein-solution with approximately 1 kilogram of pigment, e.g. Titanium White or Chalk from Champagne or a mixture of both. The wall paint should have a spreadable viscosity.
Should the paint become too thick, it can be diluted again with the 4% limecasein-solution. Make sure to test the paint on a small area of the wall prior to the application of the first coat. The amount of binding medium needed may vary for each pigment. Should the paint show chalking when it is dry, you have to add more lime-caseinsolution; if it shows cracks or peels off, the paint contains too much lime and therefore has to be diluted further and more pigment should be added. Step 6#483: Should the paint become too thick, it can be diluted again with the 4% limecasein-solution. Make sure to test the paint on a small area of the wall prior to the application of the first coat. The amount of binding medium needed may vary for each pigment. Should the paint show chalking when it is dry, you have to add more lime-caseinsolution; if it shows cracks or peels off, the paint contains too much lime and therefore has to be diluted further and more pigment should be added.
On clay plaster, the paint covers approximately 150 ml/m² per coat. Step 7#68: On clay plaster, the paint covers approximately 150 ml/m² per coat.
On lime plaster, it covers approximately 100 ml/m² per coat. Step 8#61: On lime plaster, it covers approximately 100 ml/m² per coat.

Ingredients

40 g Casein (#63200)
33 g Pit Lime (#31800)
1 kg Titanium White Rutile (#46200)
Alternative:
Chalk from Champagne (#58000)
125 ccm Water - cold!

Additional Information

Pigment suitability lists

Note

Casein can flocculate if you add too much water at once. Therefore, it is best to add the water bit by bit and in small portions while constantly stirring. Use up the same day.

We assume no liability for the processing instructions described above. In any case, we recommend the production and evaluation of sample surfaces.

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