Minimum Slope For Standing Seam Metal Roof

For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam.

Minimum slope for standing seam metal roof.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. We require a 2 12 pitch for our standing seam products. Standing seam roof systems must have a minimum roof slope of 1 4 12.

Low slope metal roofs require less material which reduces the overall load on the building s structure. The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal 25 percent slope. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Minimum metal roof slope depends on the roof profile building design climate and site location. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following.

You can often see such examples of use over metal decks. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. In a few rare special occasions we might approve down to 1 5 12. 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.