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2. Alcoa - Wikipedia

   en.wikipedia.org/wiki/Alcoa

   Alcoa. Alcoa Corporation (an acronym for " Aluminum Company of America ") is a Pittsburgh -based industrial corporation. It is the world's eighth-largest producer of aluminum. [ 2][ 3] Alcoa conducts operations in 10 countries. Alcoa is a major producer of primary aluminum, fabricated aluminum, and alumina combined, through its active and ...

3. List of commercially available roofing materials - Wikipedia

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

   Metal roofing is any of a large variety of roof coverings made from metal and is characterized by its high resistance, impermeability, and longevity. While there are an infinite variety of how to produce metal roofing, thicknesses, and types for metal/finishes used, roofing is generally grouped into 2 categories: Exposed Fastener Panels and ...

4. Alcon - Wikipedia

   en.wikipedia.org/wiki/Alcon

   Alcon offices in Johns Creek, Georgia. Alcon Inc. ( German: Alcon AG) is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people. [2]

5. What to Consider Before You Choose a Roofing Material - AOL

   www.aol.com/consider-choose-roofing-material...

   The lifespan of metal roofing is longer, typically ranging from 40 to 70 years, depending on the material, Marino says, whereas asphalt shingles usually last between 20 to 30 years. In addition ...

6. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   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.

7. GAF Materials Corporation - Wikipedia

   en.wikipedia.org/wiki/GAF_Materials_Corporation

   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 ...