Minimum Roof Pitch For Standing Seam

In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.

Minimum roof pitch for standing seam.

Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. Roof slope equivalents as rise. We recommend 5 degrees however due to site conditions and execution. The profile refers to the shape the metal sheets take when they bend to.

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. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater. Roof pitch multiplier table. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

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. 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. 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.

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. Sig zinc and copper recommend that the minimum pitch for a standing seam zinc roof is five degrees with an absolute minimum of 3 degrees. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

Minimum metal roof slope depends on the roof profile building design climate and site location. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems.

Degrees to pitch rise in run table. You can often see such examples of use over metal decks.