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.

Standing seam metal roof minimum slope.

You can often see such examples of use over metal decks. 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. Corrugated metal roofing has the same minimum pitch. That means there is at least 3 of vertical rise to the roof slope for every 12 it goes back horizontally.

In 12 0 25 in 12 1 19 built up roof coal tar pitch. Roofing material or system. 18 43 asphalt shingles with special underlayment requirements 2 in 12. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more.

Minimum required slope x in 12 minimum required slope degrees asphalt shingles. Minimum slope requirements depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. That is a 14 degree angle. Mechanically seamed standing seam metal roofs commonly used on large warehouses and the like can be used on much lower roof pitches.

For example if your roof rose 8 inches for every 12 inches the roof pitch is 8 12. Mbma classi fies metal roof systems into two types through fastener metal roof systems and standing seam metal roof systems. Minimum required roof slope for roofing materials. Standing seam is the metal roof profile that has been gaining more popularity nowadays due to its clean and modern looks.

9 46 built up roof asphalt. Using a measuring device move inward on the flat roof plane parallel to the ground 12 inches. Once you reach 12 inches mark it and then measure how far the roof rises perpendicular to the ground. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater.

Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. Mbma recommends a minimum slope of 1 2 in 12 2 4 degrees for through fastener metal roof systems and 1.