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2. 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 ...

3. Metal Building Manufacturers Association - Wikipedia

   en.wikipedia.org/wiki/Metal_Building...

   In 1970, the MBMA had 25 members with sales of $363 million. This decade saw the industry advance through a number of new developments. The standing seam roof system [5] came into wide production and use during these years. Additionally, modern coating systems for both metal roofs and walls allowed metal buildings to incorporate a variety of ...

4. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   Standing seam metal roofs can have a lower pitch than asphalt shingle roofs because shingled roofs need a higher pitch to keep the wind from blowing up the shingles and potentially blowing them off in high winds. Standing seam metal roofs come in sheets up to or sometimes more than 30 feet (9.1 m) long and widths of 12, 14, 16 or 18 inches (300 ...

5. Roof seamer - Wikipedia

   en.wikipedia.org/wiki/Roof_seamer

   Progressive roller dies of the roof seamer are used to bend the metal roof panel seam into the desired shape to produce a finished seam profile. This shows a cross-section profile of the seam. Mechanically seamed standing seams (double locked) A roof seamer is a portable roll forming machine that is used to install mechanically seamed ...

6. Covering (construction) - Wikipedia

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

   Roofers in Germany,. In construction, covering is the exterior layer of a building's roof. The covering ensures waterproofing by directing and collecting rainwater.It also provides mechanical protection against various external elements such as dust and intrusions.

7. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   However, metal shingles are not practical for flat roofing and so roofers recommend standing-seam and screw-down metal panels. While metal can be an expensive option in the short term, superior durability and simple maintenance of metal roofs typically saves money in the long term.