Metal roof systems for steep-slope applications
There are three general types of metal roof systems used for steep-slope applications: Architectural, Structural, and Metal Shingle Panels. Architectural metal panel roof systems are “water shedding” and intended for use on steep slope roofs. Structural metal panel roof systems are installed over a large variety of substrates. Solid roof sheathing, or decking, is required for architectural metal panel roof systems.
Steep Slope roof systems are typically composed of individual components as an assembly typically consists of three primary parts:
metal panel roof systems for low-slope applications
Metal panel systems for low slope applications are the preferred metal roof covering for commercial, institutional and industrial buildings. Generally used in roof pitches ranging from ¼:12 to 3:12. The systems consists of interlocking panels commonly called standing seam roofing that run vertically along the roof surface. Varying in weight form 40-135 lbs, it is the lightest roofing product and easiest to install. The system itself places fewer demands on a building’s structural support system. Some require machine seaming during installation to ensure watertight seal. A seaming tool is simply rolled along the panels to crimp the panel seams together.
There are two types of Metal paneling typically used: Structural and non-structural (architectural). However structural is the most commonly used for its water barrier characteristics. Structural attached directly to purlins or lathe boards and does not require any sort of solid support beneath it. Because of their interlocking and active fastening systems metal roof panels are designed to meet the requirements of ASTM E1592, UL580, UL1897 and other sever wind and uplift test (winds up to 140 mph). No denting should occur on 26 gauge or thicker steel applied over a solid backing. Softer metals may be susceptible to denting. When on the roof it is recommended that you wear soft soled shoes for both traction and protection of the finish.