The West Coast of Canada uses various types of stone in the construction of buildings.   The most common stones used were Nelson Island granite, a very durable stone, Haddington Island stone, an andecite and relatively durable stone, and several sources of sandstone which by and large are a stone that deterioriates very quickly in the West Coast climate.   There are several methods of repairing or reproducing Haddington Island and all types of sandstone.