Most residential metal roofs require at least a 3 12 roof pitch and have no maximum roof pitch.
Roof pitch for metal roof.
The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally.
The metal roof minimum slope doesn t stray far from other building with different material.
The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12.
Panels joined with an applied lap sealant can go as low as 12.
Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels.
The profile refers to the shape the metal sheets take when they bend to form panels.
That means there is at least 3 of vertical rise to the roof slope for every 12 it goes back horizontally.
Metal roof slope is expressed by a ratio indicating the roof pitch which notes the vertical rise of the roof in inches for every 12 inches the roof runs horizontally in other words dividing the vertical rise and its horizontal span.
The minimum pitch for metal roofing varies depending on the profile of the metal.
After that the miimum pitch for metal panels depending on the methods used to join the panels.