To obtain the colour you want by adding ochre to mortar: a maximum of 10% ochre can be added to the base (eg cement or lime). This preparation is then mixed in with sand.

Gobetis : it is a coat prepared in the following way:  2 volumes of sand + from 1 to 2 volumes of lime (according to the solidity of the support) + water The gobetis applies rather liquid, without thickness. 

Corps d'enduit : put it after the break of the gobetis with the consistency of a heavy cream · from 2.5 to 4 volumes of sand + 1 volume of lime + water

Enduit de finition: as its name indicates it, it is the last coat. The finish can be cuffed or smoothed. from 1 to 3 volumes of sand + 1 volume of lime + pigments + water. (Add so necessary additive). 
The total thickness of three coats(layers) is generally 2 cms. On no account, it does not make 5 cms in thickness. (Risk of cracks) 

The "Société des Ocres de France" markets fillers of finish in the aerial lime, colored and ready-to-use "SOFODOR or SOFOLITH" - 42 available tints. Inform you with the secretariat (phone:00.33(0)490.746.382)

To obtain a coloured plaster, incorporate between 10% and 15% ochre to plaster.

To create a shinning aspect, the use of a wax which we shall polish afterward will give a silky finish and will create of the depth as well as the nuance. ( crème de cire or cire cal  25, in our shop).  
  For more simplicity: the "Ste des Ocres de France" markets plasters tinged in 25 kg bags. Consumption: 10 kg / m ². We invite you has to consult the colour chart in the column: coloured plaster. 

Ochre can be added at maximum rate of 10% of the weight of the cement. The most attractive colours are obtained with aggregates (sand and gravel) or with clear or white cement.

The full beauty of ochre is evident when it is used in whitewash or distemper. The different ochre colours can be mixed to achieve an infinite range of irridescent shades. The Société des Ocres de France also sells a ready-mixed white or coloured whitewash (see ‘The Shop') and you can easily add more ochre to these mixes if you wish, to obtain the colour of your choice.

This gel is a colourless base which you tint to the shade you want. All you have to do is put some ochre in a bowl and stir in a little water. You then stir this mixture into the gel to obtain a smooth, consistent paste. The gel is applied to a surface that has already been painted with a lime-wash.

Between 10 and150 grams of ochre can be added to 2.5 litres of gel.

Arabic gum is the traditional medium for watercolour painting..

Painting with egg is an ancient technique and the best for a long-lasting finish. M ix one egg yolk with one volume of water, add a preservative (such as a few drops of oil of cloves) and then the pigments.

Mix the pigments with linseed oil turpentine. Then add some drops of a siccative ( a drying agent) or heated linseed oil, as well as a preservative (some drops of oil of cloves).