Minimum Roof Pitch For Standing Seam Metal Roof

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 metal roof.

And profiles like standing seam which utilize a concealed connection to the roof deck require only a one and a half inch minimum pitch. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. Roof slope equivalents as rise.

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. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. 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. Pbr which is typically used for industrial metal buildings can be installed as low as half inch pitch for example.

Degrees to pitch rise in run table. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Low slope metal roofs require less material which reduces the overall load on the building s structure. Standing seam roof systems must have a minimum roof slope of 1 4 12.

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. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. You can often see such examples of use over metal decks.

Also pitch is often expressed in a shorthand style using just the first number. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. Roof pitch multiplier table. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam.

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