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A metal roof is a roofing system made from metal piece, or tiles. It is a component of the building envelope. Metal roofs protect buildings. In the United States, metal comprises 10% of the overall residential re-roofing market. ==History== Copper has played a significant role in architecture for thousands of years (see: Copper in architecture)''.'' In the 3rd Century B.C., copper roof shingles were installed atop of the Loha Maha Paya Temple in Sri Lanka.〔Seale, Wayne (2007). The role of copper, brass, and bronze in architecture and design; ''Metal Architecture,'' May 2007〕 And the Romans used copper as roof covering for the Pantheon in 27 B.C.〔Copper roofing in detail; Copper in Architecture; Copper Development Association, U.K., www.cda.org.uk/arch〕 Centuries later, copper and its alloys were integral in European medieval architecture. The copper roof of St. Mary's Cathedral, Hildesheim, installed in 1280 A.D., survives to this day.〔Copper Roofing in Detail; Copper in Architecture; Copper Development Association, U.K., www.cda.org.uk/arch〕 And the roof at Kronborg, one of northern Europe's most important Renaissance castles (immortalized as Elsinore Castle in Shakespeare’s ''Hamlet'') was installed in the 1585 A.D.〔Kronborg completed; Agency for Palaces and Cultural Properties, København, http://www.slke.dk/en/slotteoghaver/slotte/kronborg/kronborgshistorie/kronborgfaerdigbygget.aspx?highlight=copper〕 The copper on the tower was renovated in 2009.〔Agency for Palaces and Cultural Properties, Renovation of the Tower of Christianborg Palace., http://www.slke.dk/en/slotteoghaver/slotte/christiansborgslot/hovedslottet/renoveringaftaarnet.aspx?highlight=copper+roof〕 Earlier metal roofing was a sheeting in the form of corrugated galvanized steel and still find applications today in parts of the developing world. In addition, colour-coated steel roofs are popular in some of the Nordic countries such as Finland and Sweden. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Metal roof」の詳細全文を読む スポンサード リンク
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