The major advantage of this type of metal roofing is its ability to be used in low slope applications like steel buildings or on other types of structures where the roof pitch is below a 3 /12. Each panel is crimped, creating a water tight seam between the metal roofing sheets. Mechanically seamed metal roofing panelsįinally, lets looks at a few types of mechanically seamed metal roofing panels.Ī mechanically seamed metal roofing panel is a type of metal roofing that has to be crimped or folded together after the metal roofing is laid. It takes a mechanically seamed metal roofing panel to get into low slope metal roofing applications and to span open purlins. The snap lock type of standing seam is a good metal roofing panel choice, but neither snap lock panels can be installed over open purlins and both snap lock type metal roofing need at least a 3 on 12 pitch to work. The 1-3/4” snap lock uses a clip system as its method of attachment and this metal roofing profile has had all the test and wind up lift ratings done which makes it easy for architects to spec on projects. The pre punched slots are where the panel is fastened down to the wood decking.ġ-3/4” snap lock is also a standing seam but this panel is commonly installed in both residential and commercial roofing applications. This panel is considered standing seam, but it does not use a clip, it uses a pre punched nail fin on the side of the metal. This panel needs a solid wood deck and works great in residential roofing applications.
Both panels are considered snap lock because of the way the metal pieces snap together.Ģ6 gauge nail fin is a snap lock metal roofing that is a nice upgrade from a corrugated screw down metal. The next two types of metal roofs we’ll discuss are hidden fastened or standing seam metal roofing. However, what you save in price you can give up in quality as hidden fastened panels or standing seam metal roofing, when properly installed, will last much longer than an exposed fastener metal roofing. And this is where we most often see the R-panel used, on pre engineer steel buildings.Įxposed fastened metal roofing panels are very common because they are relatively cheap to buy and easy for roofing contractors to install.
R-panel is made of 26 gauge metal and can span open purling 5’ on center like those found in steel buildings. R-panel is the exposed fastener panel most commonly used in commercial and industrial roofing applications. And while we don’t recommend this type of metal roofing for houses, it is commonly installed in residential roofing applications. It can span 2’6” over open wood purling making it a great metal roofing for post frame buildings.
It is a very common type of screw down metal that is easy to install and easy to purchase at most lumber yards. Two of the most common types of exposed fastened metal roofing and probably the most sold metal roofing in the United States are a 29 gauge, corrugated metal roofing for agriculture/residential use, and the R panel or PBR panel as its called for the commercial roofing applications especially on pre engineered steel buildings.Ģ9 gauge corrugated metal roofing is often referred to as barn metal or pole barn metal. In this type of metal roofing the screws are not seen. In hidden fastened standing seam roofing the metal is attached to the building via a clip that sits under the metal. A hidden fastener is how standing seam metal roofing is installed. Exposed fasteners panels attach to the home or building by running a screw directly through the face of the metal roofing into the wood or metal purling below. To begin we will divide the types of metal roofing into two main categories, exposed fasteners and hidden fasteners. Here are the 6 most common types of metal roofs being installed in 2020 In this blog we will look at 6 types of metal roofs being installed so you can learn which type of metal roof is right for your next project. Metal roofing is used in residential, commercial, and industrial applications with different profiles and gauges of metal to fit each application. Making sense of metal roofing can be tricky because it’s such a broad topic. Learn What Type Of Metal Roofing Is Right For Your Next Project