Standing seam metal roofs can be fabricated in a fabrication shop or on the jobsite in just a few days and last for the life of the home, which means no more worry about saving money for shingle replacements.

The natural properties of a metal roof are very impressive. Metal panels are durable and long lasting as well as virtually maintenance free. They offer tons of remodeling benefits like the ability to be installed over almost any type of existing roof system and the wide array of color options and styles that can be used to match any home style.

Standing seam metal roofs have become popular in parts of the country that present harsh weather conditions such as the Deep South, where conditions are hot and humid for many months of the year. They are also admired by northerners because of their ability to withstand heavy snow and wind loads.

Other benefits worth mention are the fire resistance ratings and the ability to blend in and match almost any style of home. Metal roofs offer what many believe to be the perfect styles for upscale homes as well as homes of lesser value, such as mobile homes. The most popular of any style is the standing seam metal roof, which has been used throughout the world on almost every type of home imaginable.

A standing seam roof is constructed of many interlocking panels that run vertically from the roof's ridge (the top of the roof) to the eave. The interlocking seam where two panels join together is raised above the roof's flat surface, allowing water to run off without seeping between panels.

Standing seam roofs come in many shapes and sizes. In some instances, the vertical panels are cut to length at a factory and delivered to the job site. Other types are shaped and cut right on the job site using portable equipment. Other options include standing seam "shingles" that arrive prepackaged (typically in three to five-foot lengths) and are installed in a staggered pattern for visual effect.

Two types of methods are commonly used to secure the panels to the roof sheathing. Hidden fasteners are secured to the raised portion of each panel, and subsequently covered by the next adjoining panel during installation. The second (and less costly) method utilizes exposed fasteners that are driven through each metal panel into the roof sheathing.

Now we can discuss how standing seam metal roofs are constructed. Let's assume the metal roof panels are going to be formed on the jobsite instead of in a metal fabricators shop or factory.

Each section of the metal roof is individually formed to the desired length. This reduces jobsite waste, as short and long panels can be cut to the appropriate length. The shaping machine, called a brake, is specifically designed to form the interlocking panels.

A sharp-toothed hydraulic shear cuts each panel to the appropriate length without damaging the panel ends. Although some hand trimming is involved, the panels are formed and cut to length and ready to install in just a few minutes.

Individual roof elements are installed in a specific sequence to create a watertight seal. First, roofing paper is installed over the roof sheathing. Next, the roof's valleys (formed where two roof sections meet at an angle) are covered. A preformed ridge cap covers the roof's peak. Each of the vertical roof sections will be attached to the ridge vent for a uniform appearance.

Each roof panel that runs from ridge to eave tucks neatly into the ridge vent. Clips secure each panel to the roof sheathing. Using hidden fasteners creates a more polished look once the job is completed. The next adjoining panel will cover the clips that secure each panel (left). The raised seams formed by the panel ends are crimped together to form a watertight seal.

Each adjacent roof panel is crimped together. Each panel hides the clips that secure the adjacent panel to the roof sheathing. By completely covering the fasteners, they are not exposed to the elements, reducing the possibility of water damaging the roof sheathing or the structural system below.

The final results: Ridge cap, valleys and vertical sections all come together to form a watertight seal against the elements. A properly installed metal roof can go many years with little or no maintenance.