Standing Seam Roofing Minimum Slope

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope.

Standing seam roofing minimum slope.

2 exactly does not translate to 1 4 per foot. The profile refers to the shape the metal sheets take when they bend to form panels. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Ibc callouts for min 2 or 1 4 per foot.

I understand this is more of rounding off to get to a nice number. Standing seam roof systems must have a minimum roof slope of 1 4 12 2 slope. You can often see such examples of use over metal decks. And profiles like standing seam which utilize a concealed connection to the roof deck require only a one and a half inch minimum pitch.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. 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 associa tion also stresses deflection of purlins and rafters under dead and live loads be checked to ensure positive drainage. 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.

This means for every 12 horizontal units the roof must rise a minimum of one quarter vertical unit. I am looking at the ibc minimum roof slope requirement for standing seam metal roof. So typically we follow 2 slope is that meeting the code even if the slope is slight shy of 1 4 per foot. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

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. 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. Roof systems must meet a governing.