What Is the Minimum Roof Pitch for Metal Roofing?

Various materials can be applied to roofs, from metal shingles to clay tiles, to protect the building from the weather elements. The pitch, or slope, of a roof needs to be considered before settling on a roof material purchase.

Roofer on ladder
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Businesspeople shaking hands in warehouse
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Metal roofing.

Metal roofing can either be applied as a shingle or a panel. In general, this type of roofing cannot be applied to a flat roof; there must be some pitch to the roof for proper installation.


Red home roof
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Shingles on rooftop.

The pitch of a roof is expressed in a ratio of rise over run, creating a theoretical triangle with these numbers to illustrate the amount of slope. In fact, the larger the first number becomes, the steeper the slope. The minimum pitch allowed for metal shingles is a 3:12 ratio, whereas metal paneling can be applied down to a 1:12 ratio. 1).


home's roof
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Metal rooftops.

Since metal roofing can be applied to multiple slopes, the material is very versatile for differing roof pitches. Keep in mind that, for very steep roofs, consulting a professional and having them install the material is the safest route to choose.