The vernacular tradition and globalization
Traditionally, building materials were those found locally—so in forest areas, timber was used. When forests were cleared stone was quarried or clay was dug to make bricks or earth was used to make dried mud structures. This tradition of using locally available materials continues in many areas today. In mountain regions, such as the Lake District or North Wales, the whole built environment can be made predominantly of one material – such as slate, which could be used for walls, paving, roofs and, in crushed form, as roadstone. Slate was even occasionally used for coffins.