Unlike some other roofing materials, copper roofing can be installed at almost any time of year. With the revolutionary sliding and concealed clip system, this type of roof can manage thermal shock. The clip system lets equivalent amounts of force be diffused in two directions, allowing for better shock absorption and making it resistant to temperature change. In addition, the flashing for our standing seam roofs is water-tight. Panels are properly sized in order to avoid “oil canning” (bubbling and twisting) when the metal expands and contracts with changing temperature.
Over time the copper oxidizes, turning a beautiful jade-like green. In this carbonate form it is highly resistant to corrosion.
Another benefit of standing seam metal roofs is the ease with each they shed snow and ice, keeping the roof light, and preventing ice-dams. Over the years, we have encountered some standing seam roofs which were installed with a single lock system. Single lock systems can leak due to water capillary action, so Landmark Exteriors uses only double-lock seams as described in Copper and Common Sense.