Slope Required Metal Roof

Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels.

Slope required metal roof. The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 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. 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 required roof slope varies with application of materials and use. See the below florida building code fifth edition 2014 2017 sections below to determine which slope is appropriate based on your specific design scenario. The minimum roof slope requirement for metal panels varies depending on panel connection conditions. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12 4 slope. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally.

The minimum roof slope for metal roofs is dependent upon the roof profile. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.