Low Slope Metal Roof Detail

Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.

Low slope metal roof detail.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. 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. The panels have been designed for application over a wide variety of substrates on roof slopes as low as 1 2 12 pitch.

Minimum metal roof slope depends on the roof profile building design climate and site location. Low slope metal roofs require less material which reduces the overall load on the building s structure. The roof clips or hold down clips are concealed in the seam of the panel. If the ssr is attached directly to open framing it is typically designed to expand and contract and must be allowed to float.

Regular asphalt shingles and standard skylights will work at pitches of 4 12 or greater but at lower pitches you have to use different materials. By low slope roofing we mean any roof that is pitched at less than 4 inches of rise in 12 inches of run or 4 12 pitch. 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. That includes soldered metal roofing or synthetic membranes.