The NZ Metal Roof and Wall Cladding Code of Practice is a comprehensive design & installation guide, and a recognised related document for Acceptable Solution E2/AS1 of the NZ Building Code.
View Whole Section for Roof Drainage
The Roof Drainage section coincides with the NZBC Clause E1 Surface Water. It describes how to drain rainwater from roofs quickly and effectively. Topics include:
- Rainfall Intensity
- Roof Pitch for Drainage
- Gutter and Downpipe Design
- Gutter and Downpipe capacity calculations.