The standard of lower pitch actually ranges between 1 12 to 5 12.
Minum pitch on a steel roof.
Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.
After that the miimum pitch for metal panels depending on the methods used to join the panels.
Corrugated metal roofing has the same minimum pitch.
For low slope metal roofs under 12 that are nearly flat modified bitumen roofing thermoset and.
The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot.
To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.
Roof slope equivalents as rise.
Anything above that will require you to put out higher cost because they are already considered as higher pitch.
Most residential metal roofs require at least a 3 12 roof pitch and have no maximum roof pitch.
The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12.
That is a 14 degree angle.
That means there is at least 3 of vertical rise to the roof slope for every 12 it goes back horizontally.
Panels joined with an applied lap sealant can go as low as 12.