Metal Roof Pitch Minimum Standing Seam

Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered.

Metal roof pitch minimum standing seam.

In retrofit projects a sub framing system is attached to the existing flat roof surface to provide a minimum 12 roof pitch. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12. Standing seam roof systems must have a minimum roof slope of 1 4 12.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Low slope metal roofs require less material which reduces the overall load on the building s structure. Complete list of roofing types. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope.

Degrees to pitch rise in run table. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. Roof slope equivalents as rise. Speaking about standing seam metal roof slope it is a general and a self evident knowledge that the steeper it is the faster it is for snow rain or drain to come down the roof.

Roof pitch multiplier table. You can often see such examples of use over metal decks. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Minimum metal roof slope depends on the roof profile building design climate and site location. A standing seam design assures adequate draining from rain and snow effectively eliminating ponding leaks and related problems typically associated with built up roofs. For this sort of system the panels are secured to the roof using hidden clips and then a seaming machine is used to crimp the seams closed so they will be water tight.

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.