Metal Roof Pitch Minimum Standing Seam

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

Metal roof pitch minimum standing seam.

Low slope metal roofs require less material which reduces the overall load on the building s structure. Degrees to pitch rise in run table. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. 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. Standing seam roof systems must have a minimum roof slope of 1 4 12. 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. 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 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. Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Complete list of roofing types.

Minimum metal roof slope depends on the roof profile building design climate and site location. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. You can often see such examples of use over metal decks.

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. Typically large footprint single story. In retrofit projects a sub framing system is attached to the existing flat roof surface to provide a minimum 12 roof pitch.

Roof pitch multiplier table.