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2. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   Metal roofs are 100% recyclable and can be made from other recycled products. Asphalt shingles are petroleum based with other chemicals making their recycling process more toxic, most shingles are not recycled and 20 billion pounds (9.1 million tonnes) are sent to landfills every year and take hundreds of years to decompose.

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

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

   Generally speaking, though, a quality metal roof will often total about two to three times the cost of a fiberglass shingle roof, Miller says. So, for a typical 2,500-square-foot home with a 4,000 ...

4. Copper in architecture - Wikipedia

   en.wikipedia.org/wiki/Copper_in_architecture

   Copper roofing in rural atmospheres corrodes at rates of less than 0.4 mm (1 ⁄ 64 in) in 200 years. [27] Unlike most other metals, copper does not suffer from underside corrosion that can cause premature failures in roofing. With a copper roof, supporting substrates and structures usually fail long before the copper on the roof. [11]

5. How Much Does it Cost to Replace a Roof? - AOL

   www.aol.com/much-does-cost-replace-roof...

   Metal roofs last longer than shingles, ... Basic asphalt shingles cost between $2,000 and $4,000 for the material alone, while premium options such as copper can cost more than $40,000.

6. List of commercially available roofing materials - Wikipedia

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

   Solar shingle; Metal shakes or shingles. Long life. High cost, suitable for roofs of 3:12 pitch or greater. Because of the flexibility of metal, they can be manufactured to lock together, giving durability and reducing assembly time. For a discussion of copper system shingles, see Copper in architecture#Wall cladding.

7. Architectural metals - Wikipedia

   en.wikipedia.org/wiki/Architectural_metals

   Sheet copper used as roofing is lighter than wooden shingles and much lighter than slate, tile, or lead. Roofing copper can be folded readily into waterproof seams, or shaped over curved frameworks for cupolas and domes. The initial cost of copper was traditionally high, but its length of service more than compensated for the price. Copper ...