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What is the minimum roof pitch for metal roofing?

Updated February 21, 2017

Various materials can serve as sturdy roofing materials -- from metal sheets to clay tiles -- to protect the building from the elements. The pitch, or slope, of a roof needs to be considered before settling on a roofing material.

Function

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

Considerations

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 panelling can be applied down to a 1:12 ratio.

Significance

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

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About the Author

Writing professionally since 2010, Amy Rodriguez cultivates successful cacti, succulents, bulbs, carnivorous plants and orchids at home. With an electronics degree and more than 10 years of experience, she applies her love of gadgets to the gardening world as she continues her education through college classes and gardening activities.