Low Slope Roofing Metal

Determining which panel is the right choice for the slope on your project will depend on the manufacturer s minimum slope factor for that specific panel profile.

Low slope roofing metal.

Because of the shallow height of the undulating ridges of the 5v and corrugated profiles and the use of exposed metal fasteners to screw the metal to the roof deck they are limited to a slope that will shed rain quickly. There are some opinions that standing seam metal roof minimum slope is 12 but it increases the possibility of leaking on the few first days of snow arrival. Minimum metal roof slope depends on the roof profile building design climate and site location. Low slope metal panel roofing may be a standing seam roof ssr through fastened roof tfr or insulated metal panel imp roof.

An ssr has side joints between the roof panels that are arranged in a vertical position above the roof line. Low slope metal roofing materials include perimeter edge flashing soffit panels drainage and es 1 rated edge systems from sheet metal supply. But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch. Typically low slope metal roof systems vary in weight from 40 to 135 pounds per 100 square feet making them among the lightest roofing products and the easiest to install.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Structural metal panel roof systems can be used for low slope roofs because of their hydrostatic or water barrier characteristics. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems.

A low slope roof is defined in the industry as a roof that has a pitch equal to 3 12 or less. At sheffield metals we also recognize low slope as 3 12 and below. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. There is only one category of metal roof systems used in low slope applications structural metal panel.

The metal roof retrofit system is installed over steel bar joists that are spanning parallel to the new roof slope.