10. Selecting materials and products
In a circular economy, each material in the building and its components has to be declared and defined, the composition has to be as pure as possible and it has to separable from other materials. These requisites ensure that buildings can become materials banks (see Chapter 11) where materials are effectively stored for future use, rather than consumed and lost.
One of the defining principles of a circular economy is the distinct split between 'biological materials' and 'technical materials', as explained in Chapter 1. Biological materials, such as wood and sand, are used in products that are free of contaminants ...
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