Graeme North - registered architect, chairman of the Standards
New Zealand Technical Committee for Earth Building, inaugural
chairman of EBANZ
The Earth Building Association of New Zealand (EBANZ - P.O. Box 1452, Whangarei).
Earth is an ancient building material that is still used in many different ways with about half the world's population still living in earth buildings. But earth building is not a phenomenon only of the Third World. In France, about 15% of the population live in earth walled houses. In some regions of Australia over 20% of the houses are built with walls of unfired earth.
Why Build from earth ? Costs, eco-friendliness, aesthetics. Building with earth materials can be a way of helping with sustainable management of the earth's resources. They can be put in place using simple machinery and human energy. Earth buildings avoid deforestation and pollution, and can achieve low energy costs throughout their lifetime - in the initial manufacture and construction, in their use as homes, and eventually in their recycling back to the earth.
Earth is more time-consuming than conventional design and construction, but for those who are providing their own labour, the time involved in earth construction may be less significant than the money cost of modern materials. Many people also value earth construction for its aesthetic qualities.