I’ve always loved building but have always considered it medieval in selection of material. Why are we still building with mud bricks and coating them with an earthen daub? Why is a pure masonry building still favoured by so many? With the advent of more lightweight options available to today’s builders and designers, earthen building products should be put in their place – as heat sinks and as feature walls/floors that assist in regulating the ambient temperature without the input of power. The place for a lightweight wall that can achieve over R4.0 is on the sunny perimeter. It is as s