Both of these can result in a lower labor cost as compared to some standing seam roofs. Types of metal roofs install#These roofs also are simpler to install as there is no seam-locking required other than fastening the panels using fastener screws. Advantages of exposed fastener metal roofsĮxposed fastener metal roofs typically have wider panel coverage than standing seam, resulting in fewer panels needed to cover the same area. Types of exposed fastener systems include Pro-Panel II, which are common on Colorado mountain cabin roofs, as well as Type-R panels, which are common on Denver industrial metal roofs. These screws have special washers designed to ensure no water seeps in through the fastener locations. The fastener screws are visible from the outside. Mechanical Lock Metal Profiles Exposed Fastener Metal Roof SystemĮxposed fastener metal roofs are different from standing seam systems in that the panels are fastened from the exterior. These systems are also more difficult to perform repairs on because of the need to “undo” the locked seam and get underneath the metal panels. That takes more labor, and results in higher overall cost. Types of metal roofs manual#Standing seam metal roofs build with mechanical seams require more manual time and effort during installation. Disadvantages of mechanical seam metal roofs This is why mechanical seam metal roofs are frequently found on commercial structures in the Denver area. With the seams being folded-over, water has a longer path to fight against gravity at the seam in order to get under the metal. Mechanically seamed roof systems are known to be more watertight than snap lock panels. Nearly all mechanically seamed metal roofs in Denver are built using the double-lock process.Īdvantages of mechanical seam metal roofs Types of metal roofs full#But then they’re folded down again to create a full 180 degree seam lock.
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