Gable Roof Calculator Australia
Calculate pitch, rafter lengths, ridge length and material needed for your gable roof, gazebo or pergola.
Gable Roof Calculator Australia
How to Calculate Your Gable Roof
Use the tool below to measure pitch, then use the table below to estimate material quantities.
Live Roof Pitch Measurement
0°
—
Place phone flat on the roof slope
Common Gable Roof Pitches for Gazebos
| Pitch | Degrees | Rise/Run | Best For |
|---|---|---|---|
| Low | 15° | 3.2/12 | Modern, sleek look |
| Standard | 20°–22° | 4.4–5/12 | Most popular for gazebos |
| Classic | 25° | 5.7/12 | Great water runoff |
| Steep | 30° | 7/12 | Traditional gable style |
Why Choose the Right Gable Pitch?
- Better water runoff in Australian rain
- Proper shingle installation and longevity
- Stronger structure for our asphalt shingle kits
- Matches standard gazebo designs