Why do it at the same time
- The scaffold and edge protection are already in place
- New roof sheets and new spouting can be detailed together at the eaves
- Colours match from day one
Coastal exposure matters more for spouting
Manufacturer warranty tables treat gutters and downpipes as "accessories" and give them shorter warranties and more frequent washing than roofing. For example ZINCALUME® roofing in a Moderate environment carries 20 years versus 10 years for gutters and downpipes, with manual washing every 3 months 1. COLORSTEEL® publishes separate accessory warranties by category too 2.
What to ask
- Material and profile of the spouting, and its warranty for your exposure category
- Number and size of downpipes
- How it connects to existing stormwater (drainage work must be done by an authorised person 3)
Add spouting to your quote request or see roof replacement.
Sources
- New Zealand Steel — ZINCALUME®
- COLORSTEEL® — Environmental categories & warranty guide (PDF)
- MBIE Building Performance — Schedule 1, exemption 1: general repair, maintenance and replacement
Figures are published planning ranges, checked 26 October 2026. They are not quotes.