Metal Roof Minimum Slope Requirements

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.

Metal roof minimum slope requirements.

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

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. The associa tion also. 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.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. Metal roof panels minimum roof slope roof pitch r905 10 2. Minimum pitch for metal roof.

Amongst many decisions one has to make when designing a metal building determining metal roof minimum slope is one of them. 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 pitch for metal roofing varies depending on the profile of the metal.

It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical. Roof pitch is the degree of building s roof slope. 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 minimum roof slope requirement for metal panels varies depending on panel connection conditions. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. 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 for metal roof panels depend on 3 different scenarios.