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  2. Aluminium oxynitride - Wikipedia

    en.wikipedia.org/wiki/Aluminium_oxynitride

    Aluminium oxynitride is optically transparent (≥80% for 2 mm thickness) in the near-ultraviolet, visible, and mid-wave-infrared regions of the electromagnetic spectrum. It is four times as hard as fused silica glass, 85% as hard as sapphire, and nearly 115% as hard as magnesium aluminate spinel. It can be fabricated into transparent windows ...

  3. Metal roof - Wikipedia

    en.wikipedia.org/wiki/Metal_roof

    Standing seam 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.

  4. Flashing (weatherproofing) - Wikipedia

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

    In earlier days, birch bark was occasionally used as a flashing material. [7] Most flashing materials today are metal, plastic, rubber, or impregnated paper. [8]Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminium, terne-coated copper ...

  5. GAF Materials Corporation - Wikipedia

    en.wikipedia.org/wiki/GAF_Materials_Corporation

    GAF is an American manufacturing company based in Parsippany, New Jersey. [1] Operating as a subsidiary of Standard Industries, GAF is the leading roofing and waterproofing manufacturer in North America, with 30 locations across the U.S. GAF produces both commercial and residential roofing products, as well as pavement coatings.

  6. 22-year-old fell through skylight after roofing company ...

    www.aol.com/news/22-old-fell-skylight-roofing...

    The Department of Labor says the Louisiana roofing company could have prevented the death of its 22-year-old employee. 22-year-old fell through skylight after roofing company ignored deadly risks ...

  7. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    Rigid panel insulation, also known as continuous insulation [13] can be made from foam plastics such as polyisocyanurate or polystyrene, or from fibrous materials such as fiberglass, rock and slag wool. Rigid panel continuous insulation is often used to provide a thermal break in the building envelope, thus reducing thermal bridging.

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