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

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

    These dark stains take away from aesthetics and make a roof look older. Pros and Cons of Metal Roofs Metal Roof Pros: Long lifespan. On-trend designs. Potential energy savings. Low-maintenance.

  3. Metal roof - Wikipedia

    en.wikipedia.org/wiki/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. Stone-coated metal roofing - Wikipedia

    en.wikipedia.org/wiki/Stone-coated_metal_roofing

    A stone coated metal roof is a roof made from steel or some other metal; the metal is then coated with stone chips and attached to the steel with an acrylic film. The goal is a more durable roof that still retains the aesthetic advantages of a more traditional roofing material [1]

  5. Flat roof - Wikipedia

    en.wikipedia.org/wiki/Flat_roof

    A TPO roof membrane consists of three layers: a TPO polymer base, a polyester reinforcement scrim middle layer, and a TPO polymer top ply, which are heat-fused at the factory. TPO roof membranes typically come in three standard thicknesses: 45-mil, 60-mil, and 80-mil. Standard TPO membrane colors are white, grey, and tan, with custom colors ...

  6. Galvannealed - Wikipedia

    en.wikipedia.org/wiki/Galvannealed

    Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers at the surface.

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