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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. Copper in architecture - Wikipedia

   en.wikipedia.org/wiki/Copper_in_architecture

   Regardless, sealant-filled joints have been used successfully as a secondary waterproofing measure for standing seam and batten seam roofing applications where low-sloped roofs are less than 250 mm/m (3 inches per foot). Sealants can also be used in joints that are primarily designed to accommodate thermal movement of the copper.

4. Roof seamer - Wikipedia

   en.wikipedia.org/wiki/Roof_seamer

   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 structural standing-seam metal roof panels, as part of an overall metal construction building envelope system. The machine is small and portable to be ...

5. Hemming and seaming - Wikipedia

   en.wikipedia.org/wiki/Hemming_and_seaming

   hemming process A closed hem A seam. Hemming and seaming are two similar metalworking processes in which a sheet metal edge is rolled over onto itself. Hemming is the process in which the edge is rolled flush to itself, while a seam joins the edges of two materials.

6. Coffin lock - Wikipedia

   en.wikipedia.org/wiki/Coffin_lock

   Coffin lock is a slang term for a blind panel connector (also called a butt-joint fastener) often used in scenic construction to join together stage decks or scenery in a butt joint. These are two part connectors (male and female) that draw together and lock.

7. Double seam - Wikipedia

   en.wikipedia.org/wiki/Double_seam

   Seam bump - Seam bumps are a relatively short area of the double seam, where the seam thickness suddenly increases by 0.004" (0.1 mm) or more. They are predominantly found on welded and two-piece cans with long body hooks and are usually seen on the can filler's end when hot filled products exceed 185 degrees (Fahrenheit).