Metal Roof Pitch Minimum Standing Seam

Complete list of roofing types.

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. Typically large footprint single story. 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.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. You can often see such examples of use over metal decks. 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 slope equivalents as rise. A standing seam design assures adequate draining from rain and snow effectively eliminating ponding leaks and related problems typically associated with built up roofs. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Roof pitch multiplier table.

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. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. In retrofit projects a sub framing system is attached to the existing flat roof surface to provide a minimum 12 roof pitch. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. 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.

Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more.