The finished material has a surface reminiscent of stone or concrete. (Credit: Dezeen.com)
According to an article on Dezeen.com Silva's technique, which was developed over the course of three years, sees chalk mixed with a common byproduct of the dairy industry – the excess skimmed milk which is created in the production of butter and cream.
The surplus milk comes from an organic dairy farm in Surrey, and the chalk from a quarry in Hampshire. For the moulds, Silva uses another post-industrial waste product in the form of dead stock fabric.
