In recent years great strides have been made in the field of earthen plastering, which is the essential layer of protection of a building.
In South Africa we are moving towards the solutions of the old female and male master builders.
In a recent building project, through an old master, Herbert Arendse in Mamre, Western Cape, we rediscovered a long used lime dung plaster recipe, which Arendse learnt from his grandfather.
The constituents are one part hydrated lime; one and a fifth part three day old cow dung which is still wet, (preferred for its enzymes which give the binding properties and its fibre which strengthens); one and a fifth parts slip made with earth rich in clay; four parts smooth fine sand; and water.
There are as many plasters as there are earth or building sites. Read this analysis of Earthen Plasters by Peter McIntosh.
Materials and Methodologies