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2. 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 ...

3. List of commercially available roofing materials - Wikipedia

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

   Copper roofs have a high initial cost but very long lifetime: tests on European copper roofs from the 18th Century showed that, in theory, copper roofs can last one thousand years. [7] Another advantage of copper roofing systems is that they are relatively easy to repair. Standing-seam metal roof with concealed fasteners.

4. 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 ...

5. Roof - Wikipedia

   en.wikipedia.org/wiki/Roof

   1. To shed water i.e., prevent water from standing on the roof surface. Water standing on the roof surface increases the live load on the roof structure, which is a safety issue. Standing water also contributes to premature deterioration of most roofing materials. Some roofing manufacturers' warranties are rendered void due to standing water. 2.

6. Open web steel joist - Wikipedia

   en.wikipedia.org/wiki/Open_web_steel_joist

   The CJ-Series Joists are capable of supporting larger floor or roof loadings due to the attachment of the concrete slab to the top chord of the composite joist. Shear connection between the concrete slab and steel joist is typically made by the welding of shear studs through the steel deck to the underlying CJ-Series Composite Steel Joist. [2]

7. Covering (construction) - Wikipedia

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

   DTU 40.211 Clay Tile Roofs with Flat Gauge; DTU 40.22 Canal Clay Tile Roofing; DTU 40.23 Flat Clay Tile Roofs; DTU 40.24 Concrete Tile Roofing with Sliding and Longitudinal Interlocking; DTU 40.241 Concrete Flat Tile Roofing with Sliding and Longitudinal Interlocking; DTU 40.25 Concrete Flat Tile Roofing; DTU 40.35 Ribbed Sheet Roofing from ...