Minimum Roof Pitch For Standing Seam

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope.

Minimum roof pitch for standing seam.

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. Roof pitch multiplier table. 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. 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.

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. Roof slope equivalents as rise. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. We recommend 5 degrees however due to site conditions and execution.

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. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. The profile refers to the shape the metal sheets take when they bend to.

Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems. Standing seam roof systems must have a minimum roof slope of 1 4 12. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.

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. Degrees to pitch rise in run table. 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. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered.

A 3 degree roof pitch means just over 50mm in every metre so over 3 metres you only have 150mm to play with. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.