Since the very earlier times people have been using metal as means for covering the top of their building structures. Standing seam roof is a popular kind of metal roofing system used since the earlier periods when metals were hand made from metals like copper or tin. This metal roof is generally fabricated from number of metal panels which are interlocked with each other and placed vertically downwards from the ridge.
　　
　　 This system is generally made of metals like galvanized steel or Galvalume. The Galvalume standing seam made of Galvalume standing seam panels are comparatively more efficient than conventional roofs that are made of organic materials which deteriorate under normal environmental conditions. Galvalume systems are more resistant to corrosion and changing weather conditions. They offer a weather tight, maintenance-free roof system that can provide longer life to the roofs of commercial buildings, offices, factory buildings.
　　
　　 To cope up with expansion and contraction roof undergoes with temperature changes, the standing roof system should be attached to the building's structure with a special clip-and-tab assembly. As tab can move within the clip, entire roof can expand and contract freely so that cracks, blisters and splits will not appear on the built-up roofs. Sealing standing seam roof panels by an electric remote controlled electric glazed tile roll forming machine can also be an effective way to ensure perfect weather tightness to roof. With this machine the edges of connecting panels can be bent together to form a watertight seal.
　　
　　
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