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Understanding Roof Pitch
Formula
Roof pitch expresses the steepness of a roof as the ratio of vertical rise to horizontal run. A 6/12 pitch means the roof rises 6 inches for every 12 inches of horizontal distance.
The slope factor is used to convert the flat footprint area of a roof to its actual surface area for material ordering.
Common use cases:
- Roof material estimation
- Rafter length calculations
- Building code compliance
Frequently Asked Questions
Maria Gonzalez
Registered Dietitian, RD, MPH
Maria is a Registered Dietitian with a Master's in Public Health. She focuses on evidence-based nutrition assessment tools including BMI, calorie calculations, and body composition analysis.
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