There is a multitude of commercial metal roofing systems that have been designed and mass produced over the years. The most common type that you see today is either a paneled metal roof or a standing seam metal roofing system.
Believe it or not, one of the first metal roofs installed was by the Romans using copper in 27 B.C. to cover the very popular building called the Pantheons. Obviously, we have come a long way since then with our technology when it comes to metal coverings. The paneled metal roof comes in different profiles such as “R panel” or “U panel”. They are named for the way we see their profile design. If you look at the profile of an R paneled roof, the design of the metal look very similar to an “R”. Paneled roofs look nice but unfortunately require routine roofing service and maintenance. This is because they have what we call exposed fasteners. These are screws that hold the panels to the substrate underneath. Because the heads and polymer washers connected to the shaft of the screws are exposed to the harmful elements, they often must be re-screwed due to leaking from deterioration of the washer. This is a process where we take off all the old screws on your roof and replace them with a larger diameter screw. The screw must be larger in girth to hold the panel, but more importantly to obtain a greater purchase to the wood since a hole has already been made.