Earthborn Casein Filler is the perfect complement to Earthborn environmentally friendly wall and ceiling paints.

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Earthborn's Casein Filler is based on the natural milk protein casein and white lime which uses less energy to make due to being titanium dioxide free. This means it has a smaller carbon footprint than most other fillers. It is suitable for interior or exterior use and is water repellent yet breathable. Supplied in powder form for mixing as required, you can even create coloured filler by mixing it with your choice of Earthborn Pigment.

Overpaint: 4-8 hours

Cure time: 12 hours


  • Easy to apply
  • Easy to sand
  • Flexible
  • Long lasting
  • Breathable
  • Healthier to use
  • Water repellent
  • Titanium dioxide free
  • Ideal with all Earthborn wall and ceiling paints


1 kg of Filler should be mixed with 250 ml water until a lump-free paste is obtained. If necessary add more water during application. If colouring the filler with Earthborn pigments, the dry powder must be carefully mixed with the pigment (not more than 5%) first then the required water added. Apply the ready-mixed filler to create an even surface. If necessary level-out deep holes and cracks a second time, once the first coat of filler is completely dry. If desired the surface can be sanded with fine sand paper to obtain a very smooth surface.

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