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2. List of commercially available roofing materials - Wikipedia

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

   Heavy stone slabs (not to be confused with slate) 1–2 inches thick were formerly used as roofing tiles in some regions in England, the Alps, and Scandinavia. Stone slabs require a very heavyweight roof structure, but their weight makes them stormproof. An obsolete roofing material, now used commercially only for building restoration.

3. List of companies of the Philippines - Wikipedia

   en.wikipedia.org/wiki/List_of_companies_of_the...

   This list shows companies included in the 2022 Forbes Global 2000, which ranks companies based on four measures: sales, profit, assets and market value. [4] The list only includes publicly traded firms. [5]

4. Polycarbonate - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate

   Polycarbonate has a glass transition temperature of about 147 °C (297 °F), [8] so it softens gradually above this point and flows above about 155 °C (311 °F). [9] Tools must be held at high temperatures, generally above 80 °C (176 °F) to make strain-free and stress-free products.

5. List of largest companies in the Philippines - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_companies...

   This list is based on the Forbes Global 2000, which ranks the world's 2,000 largest publicly traded companies. The Forbes list takes into account a multitude of factors, including the revenue, net profit, total assets and market value of each company; each factor is given a weighted rank in terms of importance when considering the overall ...

6. Poly(methyl methacrylate) - Wikipedia

   en.wikipedia.org/wiki/Poly(methyl_methacrylate)

   Sheets of PMMA are commonly used in the sign industry to make flat cut out letters in thicknesses typically varying from 3 to 25 millimeters (0.1 to 1.0 in). These letters may be used alone to represent a company's name and/or logo, or they may be a component of illuminated channel letters.

7. ETFE - Wikipedia

   en.wikipedia.org/wiki/ETFE

   Employing heat welding, tears can be repaired with a patch or multiple sheets assembled into larger panels. ETFE has an approximate tensile strength of 42 MPa (6100 psi), with a working temperature range of 89 K to 423 K ( −185 °C to +150 °C or −300 °F to +300 °F ).

8. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   Replacing the roofing felt on a Scout hall in Wales. Bituminous waterproofing systems are designed to protect residential and commercial buildings.Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous, and waterproof. [1]

9. Corrugated galvanised iron - Wikipedia

   en.wikipedia.org/wiki/Corrugated_galvanised_iron

   Corrugated galvanised iron (CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia), is a building material composed of sheets of hot-dip galvanised ...