Metal Roof Seam Types

Metal roofing it s a general term that covers a broad scope of roofing options products and choices.

Metal roof seam types.

Mechanically seamed metal roofs are the only metal option for roofs of less than 2 12 pitch. Often called commercial roofing or agricultural panel roofing or even barn. Standing seam metal roofing has metal panels that interlock at the edges to form a seal. Copper roofs are 100 recyclable making them wonderful green roof options.

Those types of metal roofs typically have panels that run vertically up the roof. For this reason galvalume steel is used most commonly in rather simple metal roof styles such as standing seam because there isn t quite as much bending in the metal. These types of metal panel roofs are called standing seam because their prominent visual feature is the raised interlocking seam which joins one panel to the next. Seam heights vary but are typically 1 to 2 inches tall and allow the panels to snap together without any exposed fasteners.

Here s a side by side comparison of metal roofs and other common roofing materials. When someone references metal roofing he or she could be talking about shingles or tiles made of metal an exposed fastener roofing system that is common for agriculture buildings or maybe even a standing seam metal roofing system. Standing seam metal roofing. While the initial investment of a metal roof is higher the value it offers over a lifetime is substantial.

A standing seam roof system also classified as concealed fastener panels utilizes a series of adjoining panels that are connected by raised seams or vertical legs. When selecting a roofing material there are many factors to take into consideration beyond installation cost. While they are used on steeper roofs they can be overkill for many applications. It s divided into two different categories architectural and structural.

Copper is an extremely long lasting metal that in ideal environments can last well over 200 years. Because galvalume steel is more corrosion resistant than galvanized it is sometimes installed unpainted or with a low cost acrylic clear coat. Architectural standing seam roofing is the best type of metal roof for steep sloped roofing.