It depends on the support and the condition of application. In general terms, on non-absorbing supports, therefore not easily moist and in mediocre conditions of application (wind, high temperature...), the use of a binder with a quick-setting (natural hydraulic lime) is favored. A non-hydraulic lime, on the other hand, allows to keep its lime milk. This is even more important on large surface. The presented sample had been made with powder non-hydraulic lime.

The coloration of the whitewash is accomplished with minerals pigments, the quantity is calculated regarding the weight of the lime.

For the whitewash, the maximum is 25% of the lime weight for the natural pigments, and 15% for the oxides.

Diluted lime (1 volume of lime, for 5 to 6 volume of water) looks more like watercolor, is more transparent.

We can, depending on the withewash add a bigger pigment percentage : up to 65% of the lime weight for the natural pigments, 35% for the oxides.

The addition to lime milk is made on a basis of 5 to 10% of resin weight regarding the mass to stabilize. The addition of resin has a tendency to reduce the porosity of lime milk.

Aqueous dispersion types of resins are added to diluted lime sample.

Artificials pigments : yellow, red, blue and green oxides. They are used since the XIXth century.

These pigments are compatibles with lime and can be mixed together.