Missouri Minimum Roof Pitch

A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

Missouri minimum roof pitch.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. The minimum slope of a roof depends on the roof s profile. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The minimum roof pitch is also subject to the standards set forth by the various building codes used in the respective regions.

Express the slope of a metal roof by a ratio which indicates the pitch of the roof. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. The metal roof minimum slope doesn t stray far from other building with different material. You could also opt for a pvc flat roofing membrane.

The standard of lower pitch actually ranges between 1 12 to 5 12. You need to consider the slope requirements of each panel to determine this minimum slope. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The profile is the shape taken by the sheets when you bend them to form panels.

Let us recap on the minimum roof pitch required for each type of roofing material. Asphalt shingles require a minimum roof pitch of 2 12 or greater. However you can only use this pitch with built up roofing or specialized synthetic roofing. There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow.

The values given here. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. The chief reason for having a roof pitch is to redirect water and snow away from the roof and avoid any percolation that might result from stagnation of water on the roof. Importance of a roof pitch.

The table below shows common roof pitches and the equivalent grade degrees and radians for each.