Metal roofs are used on all types of buildings. They are lightweight and durable; they can last 20-30 years. Most manufacturers give warranties ranging from 20-50 years. Metal roofs are used to cover larger buildings because they are lightweight and can withstand many factors that other roof types can not, such as fire, hail, and wind. Metal roofs are also easier to install. They can be coated with high reflectivity coatings to help with energy usage and they can be eligible for the FPL rebates. Metal roofs can also be installed directly over an existing shingle roof. As long as the roof is in good condition and only has one layer of roof covering on it, a new metal roof can go directly over the old one and therefore cutting the cost of the job by eliminating the tear off of the old roof. There are two main types of metal roofing 5V and Standing Seam.
A 5V panels looks like this. It comes in different gauges or thickness of the metal and can be cut to fit. This enables the installer to use less waste and therefore less product. They are fastened to the roof using screws. The fastening pattern should follow the code that is in place at the time of installation, and according to the area the building is in. These panels can be coated with a Kynar finish or they can be a galvalume or “natural” finish. This can be installed on most roofs, as long as they have greater than a 2 1/2:12 pitch to them.
These are some of the profiles of a Standing Seam metal roof. They are seamed together by a machine called a seamer and can be installed on all types of buildings as well. They are generally warranted by the manufacturer and are inspected after installation to assure proper installation before the warranty is approved. The come in many colors as well as being available in different gauges also. Standing Seam roofs generally cost more than a 5V roof system, but they are usually more ascetically pleasing.