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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. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   Metal roofs are 100% recyclable and can be made from other recycled products. Asphalt shingles are petroleum based with other chemicals making their recycling process more toxic, most shingles are not recycled and 20 billion pounds (9.1 million tonnes) are sent to landfills every year and take hundreds of years to decompose.

4. List of commercially available roofing materials - Wikipedia

   en.wikipedia.org/wiki/List_of_commercially...

   Standing-seam metal roof with concealed fasteners. Mechanically seamed metal with concealed fasteners contains sealant in seams for use on very low sloped roofs, suitable for roofs of low pitch such as 0.5/12 to 3/12 pitch. Flat-seam metal with or without soldered seams. Steel coated with a coloured alloy of zinc and aluminium. Stone-coated ...

5. Covering (construction) - Wikipedia

   en.wikipedia.org/wiki/Covering_(construction)

   DTU 40.35 Ribbed Sheet Roofing from Coated Steel Sheets; DTU 40.36 Pre-painted or Non-pre-painted Aluminum Sheet Roofing; DTU 40.41 Roofing with Metal Elements in Zinc Sheets and Long Sheets; DTU 40.44 Roofing with Metal Elements in Stainless Steel Sheets and Long Sheets; DTU 40.45 Roofing with Metal Elements in Copper Sheets and Long Sheets

6. Honeycomb structure - Wikipedia

   en.wikipedia.org/wiki/Honeycomb_structure

   1931 George Thomson proposes to use decorative expended paper honeycombs for lightweight plasterboard panels. 1934 Edward G. Budd patents welded steel honeycomb sandwich panel from corrugated metal sheets. 1937 Claude Dornier patents a honeycomb sandwich panel with skins pressed in a plastic state into the core cell walls.

7. Stone-coated metal roofing - Wikipedia

   en.wikipedia.org/wiki/Stone-coated_metal_roofing

   Stone coated metal roofing was refined during and after World War II in the United Kingdom, when the government requested materials that would protect corrugated steel roofs from the harsh climate. A coating of bitumen and subsequent covering by sand , stone or other materials proved effective at protecting the metal roofs and serving as ...