No roof should ever be installed at a pitch lower than that recommended by its manufacturer. Our Schroer Standing Seam can be used down to 2:12 roof pitches and even as low as 1.5:12 in situations with short rafters and no water runoff from higher roofs. Most of our metal shingle products require a 3:12 pitch. Due to its extra dimensionality, the Country Manor Shake system should not be used at less than 4:12 pitch in heavy snow areas.