Calculate the area of your roof, number of tiles or sheets needed, and materials required based on Australian roof types and pitch.
| Item | Value |
|---|
The most popular roofing materials in Australia are Colorbond steel (BlueScope Steel) and concrete/terracotta tiles. Colorbond is dominant in new construction due to its durability, lightweight, and low maintenance.
| Pitch | Use case | Pitch factor |
|---|---|---|
| 5°–15° | Carports, commercial (min for Colorbond) | 1.00–1.04 |
| 15°–25° | Most common residential (gable) | 1.04–1.10 |
| 25°–35° | Steeper residential, traditional | 1.10–1.22 |
| 35°+ | Heritage, steep cottage | 1.22+ |