Anything above that will require you to put out higher cost because they are already considered as higher pitch.
Minum pitch on a steel roof.
That means there is at least 3 of vertical rise to the roof slope for every 12 it goes back horizontally.
Most metal roofs will have minimum pitches of three in twelve but this might sometimes go down depending on whether there are special installation procedures issued by the manufacturer regarding that particular roofing material.
The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot.
The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12.
The following table provides the minimum required.
Panels joined with an applied lap sealant can go as low as 12.
Most residential metal roofs require at least a 3 12 roof pitch and have no maximum roof pitch.
Roof slope equivalents as rise.
For low slope metal roofs under 12 that are nearly flat modified bitumen roofing thermoset and.
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.
The standard of lower pitch actually ranges between 1 12 to 5 12.
To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.
After that the miimum pitch for metal panels depending on the methods used to join the panels.