Building material
is any material which is used for construction purposes. Many naturally
occurring substances, such as clay, rocks, sand, and wood, even twigs and
leaves, have been used to construct buildings. Apart from naturally occurring
materials, many man-made products are in use, some more and some less synthetic.
The manufacture of building materials is an established industry in many
countries and the use of these materials is typically segmented into specific
specialty trades, such as carpentry, insulation, plumbing, and roofing work. Source
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