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2. Roof edge protection - Wikipedia

   en.wikipedia.org/wiki/Roof_edge_protection

   They can be used along with timber, steel, or concrete structures. [1] It often consists of a toe board, a main guard rail and an intermediate rail.". [2] Roof edge protection can take the form of personal fall arrest systems (PFAS), fall restraint systems, guardrail systems, warning line systems, safety monitors, or ladders. Since construction ...

3. Flashing (weatherproofing) - Wikipedia

   en.wikipedia.org/wiki/Flashing_(weatherproofing)

   Shaped like a “U” or channel to catch water (e.g., where the edge of a tile roof meets a wall). Through wall flashing Spans the thickness of the wall and directs water to weep holes. Cap flashing (drip cap) Often used above windows and doors. Drip edge A metal used at the edges of a roof. Step flashing (soaker, base flashing)

4. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope . The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets.

5. 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 ...

6. Hemming and seaming - Wikipedia

   en.wikipedia.org/wiki/Hemming_and_seaming

   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. [1] Hems are commonly used to reinforce an edge, hide burrs and rough edges, and improve appearance. [1]

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