Minimum Roof Pitch For Standing Seam Metal Roof

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

Minimum roof pitch for standing seam metal roof. Roof slope equivalents as rise. Roof pitch multiplier table. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. Pbr which is typically used for industrial metal buildings can be installed as low as half inch pitch for example.

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. Minimum metal roof slope depends on the roof profile building design climate and site location. 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.

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. You can often see such examples of use over metal decks. Low slope metal roofs require less material which reduces the overall load on the building s structure.

Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. 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 slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. 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.