Metal  Roofing

Flat Seam Metal Roofing

Flat Seam Metal Roofing

Standing Seam Metal Roofing

Standing Seam Metal Roofing
Landmark Exteriors is known for creating beautiful metal roofing designs, from flat seam natural copper to standing seam Galvalume®. In addition to the classic aesthetic and design benefits of a metal roof, this option can also serve other more practical purposes for homeowners.
Flat seam metal roofing is an interlocking metal panel roof system, typically installed in a brick pattern. The panels are folded one over the other progressively, hammered down to form a flat seam and soldered at the seams to provide a weather tight joint. Each panel interlocks with other panels on all four sides to cover the surface of the roof deck. Flat seam roofing is most commonly used on low slope and flat roof surfaces (3/12 pitch or lower), such as porches, balconies and porticos.
The expert team at Landmark Exteriors is trained to properly install flat seam metal roofing. It is essential that the joints are properly soldered to provide a tight seal against water and ice. Prior to installation, the edges of the panels are pre-tinned by dipping to ensure a thoroughly solder filled joint. All seams are then tamped flat and soldered in order to seal the flat copper roof system.
Standing seam metal roofing is similar to flat seam copper, but is used for higher sloped areas and other custom projects such as curves, vaults, cupolas and entry roofs. It is a side-by-side formation of vertically standing/laying sheet metal roofing panels that are secured in place by concealed fasteners. The panels are joined together at the sides, with a connecting panel lock Standing Seam Metal Roofforming a seam which is raised above the roof’s flat surface for easy water run-off.
A number of different types of copper are used in metal roofing design. Whether a project requires lead-coated copper, natural copper, or zinc-coated copper, homeowners will achieve a timeless, yet modern look when including standing seam copper roofing in their architectural plans.

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.