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.
Low slope metal panel roofing may be a standing seam roof ssr through fastened roof tfr or insulated metal panel imp roof.
During this test the roof panel system is completely submerged under six inches of water for approximately six hours.
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.
Minimum metal roof slope depends on the roof profile building design climate and site location.
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.
Rain gutters guards downspouts.
Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems.
Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.