Surface Preparation for Milk Paint

Milk paint has been used to apply color to porous surfaces for centuries before the introduction of commercially produced paints, according to MilkPaint.com. Milk paint still has a use today, especially in historic restorations and for those looking for an alternative to latex or oil based paints. Preparing the surface to be painted will ensure the best adhesion of the paint, creating a paint coat that lasts longer.

Sponge
Trisodium phosphate (TSP)
220-grit sandpaper
Paintbrush or roller
Bonding agent (such as Ultra Bond or Extra Bond)
Milk paint

Instructions

- 1
  Apply TSP to the surface, using a sponge, to wash off any dirt.
- 2
  Rinse the TSP from the surface and allow it to dry completely.
- 3
  Lightly sand the surface using a fine 220-grit sandpaper.
- 4
  Use a paintbrush or roller to apply a barrier coat of milk paint mixed with a bonding agent according to package directions on the bonding agent.
- 5
  Wait for this base layer to dry completely, and lightly sand the surface again with 220-grit or finer sandpaper.
- 6
  Apply the milk paint to the surface according to the manufacturer's directions on the container.

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