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  2. Corrugated galvanised iron - Wikipedia

    en.wikipedia.org/wiki/Corrugated_galvanised_iron

    Rusted corrugated steel roof. Although galvanising inhibits the corrosion of steel, rusting is inevitable, especially in marine areas–where the salt water encourages rust–and areas where the local rainfall is acidic. Corroded corrugated steel roofs can nevertheless last for many years, particularly if the sheets are protected by a layer of ...

  3. Metal roof - Wikipedia

    en.wikipedia.org/wiki/Metal_roof

    Corrugated metal roofs are similar in price to asphalt shingle roof installation. The fasteners are screwed through the metal into the roof requiring more maintenance to make sure the screws stay secured. Corrugated metal roofs can last 30–45 years with proper maintenance. [citation needed]

  4. GAF Materials Corporation - Wikipedia

    en.wikipedia.org/wiki/GAF_Materials_Corporation

    GAF is an American manufacturing company based in Parsippany, New Jersey. [1] Operating as a subsidiary of Standard Industries, GAF is the leading roofing and waterproofing manufacturer in North America, with 30 locations across the U.S. GAF produces both commercial and residential roofing products, as well as pavement coatings.

  5. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    Sheet metals appeared in the United States in the 1870s, being used for shingle roofing, stamped ornamental ceilings, and exterior façades. Sheet metal ceilings were only popularly known as "tin ceilings" later as manufacturers of the period did not use the term. The popularity of both shingles and ceilings encouraged widespread production.

  6. Asbestos cement - Wikipedia

    en.wikipedia.org/wiki/Asbestos_cement

    Flat sheets for house walls and ceilings were usually 6 and 4.5 mm (0.24 and 0.18 in) thick, 900 and 1,200 mm (35 and 47 in) wide, and from 1,800 to 3,000 mm (71 to 118 in) long. Battens 50 mm (2.0 in) wide × 8 mm (0.31 in) thick, used to cover the joints in fibro sheets. "Super Six" corrugated roof sheeting and fencing.

  7. Rail fastening system - Wikipedia

    en.wikipedia.org/wiki/Rail_fastening_system

    Rusted chair screw Chair screw (French: Tire-fonds) A chair screw (also known as coach screw [16]) is a large (~6 in or 152 mm length, slightly under 1 in or 25 mm diameter) metal screw used to fix a chair (for bullhead rail), baseplate (for flat bottom rail) or to directly fasten a rail. Chair screws are screwed into a hole bored in the ...