Choose Your Natural Wall Finish

Find the best natural finish for your home's walls.

| May/June 2010

  • Add warmth to your walls with clay paint.
    Photo By Andy Mattern


Clay is often found in subsoil, and it can be excavated locally using a spade or digging machine. (If local sourcing isn’t possible, purchase clay from a pottery supply store or quarry.) Clay is usually golden yellow, orange or brown, but it can also be gray, purple and green. It’s sticky and clumps together when wet. (Read Building with Cob for more information on clay subsoil selection.)


Lime is produced when calcium carbonate (most often in the form of limestone or chalk) is burned, then mixed with sand to make a mortar/plaster.


Casein, a milk protein, is used to make milk paint or as a paint and plaster additive to assist with adhesion and dust prevention.

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