The slope of a steel building s roof is expressed by a ratio called roof pitch which indicates the number of inches a roof rises vertically for every 12 inches it runs horizontally.
Standard metal building roof pitch.
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.
Minimum pitch for metal roof for the most part the minimum pitch for metal roof installations depends on what kind of material you are installing and the method in which the material is being fastened.
At r m steel we offer a variety of metal building roof pitch options providing your metal building with the style and look you want.
Asphalt shingles are appropriate on roofs with conventional pitches between 4 12 and 9 12.
In fact mini storage buildings are designed with a standard lower pitch of 5 12 because owners want to avoid the snow falling in front of the individual unit doors.
You could also opt for a pvc flat roofing membrane.
Low slope or flat roofs should not be roofed with asphalt shingles because it is much easier for water to infiltrate the roofing material on a roof with a shallow pitch.
The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12.
So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.
Roofs with a 1 12 roof pitch cost less because they reduce the amount of material needed.
There are advantages to both low and high pitched roofs standard roof pitch is 1 12.
Local snow codes are set for this exact reason.
There are advantages and disadvantages to consider with both higher and lower roof pitches.