This gutter length reference table shows the guttering needed (perimeter) for a range of roof length values, assuming a roof width of 8 m. Every figure is computed with the same engine that powers our Gutter Length Calculator, so the numbers are exact.
| Roof length | Guttering needed (perimeter) | Eaves only (two sides) |
|---|---|---|
| 2.5 m | 21.00 | 5.00 |
| 5 m | 26.00 | 10.00 |
| 7.5 m | 31.00 | 15.00 |
| 10 m | 36.00 | 20.00 |
| 15 m | 46.00 | 30.00 |
| 20 m | 56.00 | 40.00 |
| 30 m | 76.00 | 60.00 |
| 50 m | 116.00 | 100.00 |
| 70 m | 156.00 | 140.00 |
| 100 m | 216.00 | 200.00 |
How to use this table
Find the row closest to your roof length and read across to the guttering needed (perimeter). For a value between two rows, the real figure sits between them — or enter your exact numbers in the Gutter Length Calculator for a precise answer.
Need a value that is not in the table? — the Gutter Length Calculator does it instantly, for free, with the formula and a worked example built in.
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