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2. Corrugated galvanised iron - Wikipedia

   en.wikipedia.org/wiki/Corrugated_galvanised_iron

   Corrugated galvanised iron (CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia), is a building material composed of sheets of hot-dip galvanised ...

3. Purlin - Wikipedia

   en.wikipedia.org/wiki/Purlin

   The purlins are the large beams perpendicular to the rafters; from this shot, it appears that there are three purlins on either side of the roof. The sheathing boards are sometimes called the roof deck and are painted white. A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof.

4. Metal profiles - Wikipedia

   en.wikipedia.org/wiki/Metal_profiles

   Metal profile sheets due to their versatility mechanical and design properties can be used as roof and roof cladding, as external walls and wall cladding and also as floors. They are used in industry and in residential sector, and the two sectors can be used in both new construction and rehabilitation.

5. Cold-formed steel - Wikipedia

   en.wikipedia.org/wiki/Cold-formed_steel

   Hot-rolled as rolled cut length 50 70 1.40 22 Hot-rolled as rolled coils 45 65 1.44 22 ... roof and floor deck, composite deck, metal siding, and purlins and girts on ...

6. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope . The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets.

7. Copper cladding - Wikipedia

   en.wikipedia.org/wiki/Copper_cladding

   Depending on metal prices, copper may be a very cost-effective cladding and roofing material. With good building design, materials choice and craftsmanship , copper roofing or facade cladding may be cheaper than slates or concrete tiles, especially when one takes into account the lasting colour , durability, maintenance -free and lightweight ...