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Metal Roofing
There are numerous types of metal roof design and material options, ranging from flat locked copper shingles, steel Spanish-Barrel tile, traditional standing or vertical seam, aluminum and steel products designed to mimic wood and tile shakes or shingles. Depending upon the individual product, metal roofs can achieve a vast variety of looks, and can drastically differ in pricing, as well.
Generally, metal roofing products fit into two main categories: structural or architectural.
Structural roof panels, which are used on low pitch applications, are usually installed directly over purlins, effectively becoming both the deck and the roof, i.e. the roof structure. Vertical seam-type panels are the most common type of structural metal roofing and are almost always used on non-residential projects.
Architectural metal roofing includes all specialty and residential roofing products. Generally, they are installed only on steeper pitched roofs (min. 3:12 in most cases, to ensure proper water run off). Architectural panels are installed over a wood or metal deck, or in some applications, directly over an existing roof.

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