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2. List of commercially available roofing materials - Wikipedia

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

   Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...

3. Polycarbonate - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate

   Polycarbonate made from bisphenol A. ... Price: 2.6–2.8 €/kg [4] ... flat or curved glazing, roofing sheets and sound walls. Polycarbonates are used to create ...

4. Retractable hardtop - Wikipedia

   en.wikipedia.org/wiki/Retractable_hardtop

   1931 Georges Paulin made his idea public by applying for a patent on a detachable hard roof design that could ultimately be moved and stowed automatically in a car's rear luggage compartment, under a reverse-hinged rear-deck lid. [7] 1932 The French patent system granted Paulin patent number 733.380 for his Eclipse roof system on 5 July 1932. [7]

5. Poly(methyl methacrylate) - Wikipedia

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

   It also has good impact strength, higher than both glass and polystyrene, but significantly lower than polycarbonate and some engineered polymers. PMMA ignites at 460 °C (860 °F) and burns , forming carbon dioxide , water , carbon monoxide , and low-molecular-weight compounds, including formaldehyde .

6. Acrylonitrile styrene acrylate - Wikipedia

   en.wikipedia.org/wiki/Acrylonitrile_styrene_acrylate

   ASA/PC (polycarbonate) blends have been prepared and are commercially available. [ 12 ] [ 13 ] In the Fused Filament Fabrication 3-D printing process, the ASA filament is used to fabricate 3-D printed parts, which above all must absorb a certain amount of impact and impact energy without breaking. [ 14 ]

7. Roof tiles - Wikipedia

   en.wikipedia.org/wiki/Roof_tiles

   Roof tiles are overlapping tiles designed mainly to keep out precipitation such as rain or snow, and are traditionally made from locally available materials such as ...