One of the most common roofing materials is going to be metal. Like shingles, there are a few different levels of quality and cost. Max Rib or Tough rib is the most cost-effective style of metal roofs, the next step up 5V Crimp, and then Standing seam profile roofs. These panels vary in width and thickness. Thicker the panel the more expensive it. Max Rib and 5V are exposed fastener systems. This means a screw with a neoprene gasket is driven through the top of the panel to secure it to the roof deck. Over several years these gaskets can wear and cause leaks. Once that begins to happen you should replace the screws with new gaskets. A standing seam profile roof is a hidden fastener system. The benefit of this type of system is that all your screws are covered so that they cannot leak. One side of the panel is screwed to the deck and then the next panel is secured over the top of the screwed down the seam.
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