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2. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   Corrugated metal roofs are similar in price to asphalt shingle roof installation. The fasteners are screwed through the metal into the roof requiring more maintenance to make sure the screws stay secured. Corrugated metal roofs can last 30–45 years with proper maintenance. [citation needed]

3. List of commercially available roofing materials - Wikipedia

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

   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. Collyweston stone slate named after the village of Collyweston; Solar shingle; Metal shakes or shingles. Long life. High cost, suitable for roofs of 3:12 pitch or greater.

4. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   A flat roof is the most cost-efficient roof shape as all room space can be used fully (below and above the roof). Having a smaller surface area, flat roofs require less material and are usually stronger than pitched roofs. [26] This style roof also provides ample space for solar panels or outdoor recreational use such as roof gardens.

5. Terne - Wikipedia

   en.wikipedia.org/wiki/Terne

   Terne metal can last 90 years or more if the paint is maintained. Terne-coated stainless steel (TCS II or Roofinox), or copper is commonly used to replace terne metal roofs as either material will outlast terne metal. Terne-coated stainless steel roofing can last 100 years or more unpainted; copper roofing can last 50 years or more unpainted ...

6. Building material - Wikipedia

   en.wikipedia.org/wiki/Building_material

   For example, an asphalt shingle roof costs less than a metal roof to install, but the metal roof will last longer so the lifetime cost is less per year. Some materials may require more care than others, maintaining costs specific to some materials may also influence the final decision.

7. 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 ...