Understanding Roof Pitch: The Complete Guide
Roof pitch is the steepness or slope of a roof, expressed as degrees or ratio.
Common Roof Pitches in Australia
| Pitch | Common Use |
|---|
|-------|----------|
| 1° – 5° | Flat roofs, verandahs |
| 10° – 15° | Low-profile homes |
| 22.5° | Standard residential |
| 30° – 35° | Traditional homes |
| 45°+ | Steep/heritage |
Why Pitch Matters
Material Selection — Metal min 1°, concrete tiles min 15°, terracotta min 20°.
Cost Impact — A 45° roof has 41% more area than a flat roof.
Wind Resistance — Moderate pitches (15°–25°) perform best in high-wind areas.
Our Pitch Calculator converts between degrees, ratios, and percentages instantly.