Minimum Freeboard Values
Minimum Freeboard Values
| Gutter Type | Freeboard |
|---|---|
| Internal gutters | 30 mm |
| Secret gutters | 15 mm |
| Valleys > 8° | 15 mm |
| Valleys < 8° | 20 mm |
| Asymmetrical valleys | 20 mm |
| External Gutters with Overflow | No freeboard required |
| External gutters with no overflow | 15 mm |
Clause Number:
5.3.3A
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