Standing Seam Roofing Minimum Slope

The profile refers to the shape the metal sheets take when they bend to form panels.

Standing seam roofing minimum slope.

Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. 2 exactly does not translate to 1 4 per foot. This means for every 12 horizontal units the roof must rise a minimum of one quarter vertical unit. The associa tion also stresses deflection of purlins and rafters under dead and live loads be checked to ensure positive drainage.

I understand this is more of rounding off to get to a nice number. And profiles like standing seam which utilize a concealed connection to the roof deck require only a one and a half inch minimum pitch. Manufacturers specify a minimum pitch for each of the profiles they offer and sometimes they can be installed at a lower pitch if special underlayment or installation procedures are followed. Roof systems must meet a governing.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. You can often see such examples of use over metal decks. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Standing seam is the metal roof profile that has been gaining more popularity nowadays due to its clean and modern looks.

Ibc callouts for min 2 or 1 4 per foot. I am looking at the ibc minimum roof slope requirement for standing seam metal roof. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more.

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. So typically we follow 2 slope is that meeting the code even if the slope is slight shy of 1 4 per foot. 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.