Standing Seam Metal Roof Minimum Slope

Low slope metal roofs require less material which reduces the overall load on the building s structure.

Standing seam metal roof minimum slope.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. 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 roof systems must have a minimum roof slope of 1 4 12. Typically large footprint single story.

A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. 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 metal roof slope depends on the roof profile building design climate and site location.

Standing seam is the metal roof profile that has been gaining more popularity nowadays due to its clean and modern looks. The minimum pitch for a standing seam metal roof is 1 4 or 3 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. You can often see such examples of use over metal decks.

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. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run.