Minimum Slope Required For Metal Roofing

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.

Minimum slope required for metal roofing.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. The minimum roof slope requirement for metal panels varies depending on panel connection conditions. 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. Minimum pitch for metal roof. The minimum pitch for metal roofing varies depending on the profile of the metal. See the below florida building code fifth edition 2014 2017 sections below to determine which slope is appropriate based on your specific design scenario.

Let us recap on the minimum roof pitch required for. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. Mbma classi fies metal roof systems into two types through fastener metal roof systems and standing seam metal roof systems. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope.

This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. The minimum roof slope for metal roof panels depend on 3 different scenarios. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Mbma recommends a minimum slope of 1 2 in 12 2 4 degrees for through fastener metal roof systems and 1 4 in 12 1 2 de grees for standing seam metal roof systems. The required roof slope varies with application of materials and use. The associa tion also.

The minimum roof slope for metal roofs is dependent upon the roof profile.