Minimum Roof Pitch For Standing Seam

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

Minimum roof pitch for standing seam.

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. Roof pitch multiplier table. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed 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. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

A 3 degree roof pitch means just over 50mm in every metre so over 3 metres you only have 150mm to play with. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater. Degrees to pitch rise in run table.

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. The profile refers to the shape the metal sheets take when they bend to. Roof slope equivalents as rise.

Standing seam roof systems must have a minimum roof slope of 1 4 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. Minimum metal roof slope depends on the roof profile building design climate and site location. We recommend 5 degrees however due to site conditions and execution.

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