What Are Low Slope Metal Roofs?

The slope of a roof refers to the ratio of the increased height to the length covered. In other words, the more the incline, the higher the slope or pitch. The terms slope and pitch are often used interchangeably in the roofing industry. With the term “pitch” usually pertaining to the slope or angle of the roof deck, while the term roof “slope” can refer to the angle at which the roof cover materials are inclined. The roof slope actually follows the pitch. Which explains why they are often used to refer to the same thing – how much the roof is angled toward the ground.

low pitch metal roof options

Low pitch metal roofs are a low cost and low maintenance type of roofing system. Also known as flat roofs, low slope roofs typically appear very plain from a distance. Actually, flat roofs are not completely flat. Most roofs require a slight slope in order to have a proper water drainage system. The slope of a roof is an important factor that helps the runoff of water, snow, and other types of debris. 

Metal roofs, in general, are a more common option employed by business owners looking to put up an easy to maintain and cheap roofing option for their commercial properties. Because metal roofs are a lot easier to install than shingles, shakes, or roof tiles, installation alone can save property owners quite a sum due to labor costs. Metal roofs are usually just fitted and cut to cover the roof deck. Furthermore, low slope metal roofs are even easier since it typically consists of a single near-flat plain. Additionally, high-pitch or gabled metal roofs are rather uncommon.

Commercial Preference

This type of roof has been a common preference for commercial and industrial properties. This popularity has been rising for years due to the many advantages that the use of low slope metal roofs provide. One of the major advantages is the protective feature of this type of roofing. The metallic material is an effective barrier against the surrounding elements. 

Even better is the long-lasting service life, sustainability of the materials, and low maintenance costs for the entire roofing system.

Recently, building owners and architects have come to recognize and appreciate still other attributes of Low Slope Metal Roofs – their long service life, low life cycle cost, sustainability, recyclability, low maintenance requirements, light weight and resistance to wind.

Low slope structural roofing, generally used on roof pitches ranging from ¼:12 to 3:12, consists of interlocking panels, commonly called standing seam roofing, that run vertically along the roof surface. These panels generally come with a painted mill finish or a clear acrylic finish. Some metal roofing used on low slope applications requires machine seaming during installation to ensure a watertight seal. A seaming apparatus is simply rolled along the panels to crimp the panel seams together.

A standing seam design assures adequate draining from rain and snow, effectively eliminating ponding, leaks and related problems typically associated with built-up roofs. In retrofit projects, a sub-framing system is attached to the existing flat roof surface to provide a minimum ¼:12 roof pitch.

Moreover, Low Slope Metal Roofs are not prone to the degradation experienced by organic materials, enabling these roofs to better resist the elements. This, in turn, results in a longer life span and a very low annual operating cost.

Slope Requirements for Low Slope Metal Roofs

The slope of a roof variably depends on the materials, structure of the home, and many other factors. Minimum slope requirements are based on the overall profile of the property. The type of metal sheets to be used also factors in on how low the roof can actually be set. 

Low Pitch Metal Roof Options

The installation or replacement of any type of roofing system with a low pitch metal roof requires some deep consideration. The best way to install this type of roofing material is to first prepare supporting standing seam panes. These should be installed over the open purlins of the roof foundation. An inexperienced roofer shouldn’t be left to work on this type of installation if you are looking to avoid long-term damage and a number of problems that are often caused by faulty installations. The seams should stand at a minimum 2-inch height. This is even more applicable for roofing systems with some of the lowest slopes. 

Indeterminate of your choice of metal roofing for either your home or commercial property, the actual slope of your roofing structure is important. There are certain standards that need to be maintained in order to avoid water pooling, formation of ice dams, and a number of other problems that can be blamed on a poorly built, substandard roof. In order to get the best out of your low pitch metal roof options, reaching out to a professional team of roofing Charlotte NC  contractors is your best course of action. 


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