Low Slope Metal Roofing

Low slope metal roof systems are tested to astm e2140 standards a water penetration test evaluating the resistance of roof panels vertical seams.

Low slope metal roofing.

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. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. An ssr has side joints between the roof panels that are arranged in a vertical position above the roof line.

During this test the roof panel system is completely submerged under six inches of water for approximately six hours. The corrugated metal roof minimum slope is 5 degrees. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. 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.

Low slope metal roofs require less material which reduces the overall load on the building s structure. 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. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems.