Long-run is sold by the metre, but you'll be quoted per square metre installed, with underlay, flashings and labour included 1. So a materials-only price per metre won't line up against an installed quote.
What does long run roofing cost per m² in NZ?
Installed 2026 rates, incl. GST:
| Long-run type | Installed per m² | 150 m² roof (calculated) |
|---|---|---|
| Corrugated | $130–$180 | $19,500–$27,000 |
| Tray / standing seam | $170–$230 | $25,500–$34,500 |
Per-m² rates: [[sol_cost]]. An Auckland guide gives Colorsteel long-run at $90–$180/m² [[sup_akl]].
Which long run profile suits my roof pitch?
Minimum pitches from the NZ Metal Roofing Manufacturers Code of Practice:
| Profile | Rib height | Minimum pitch |
|---|---|---|
| Corrugate | 16.5 mm | 8° |
| Corrugate | 21 mm | 4° |
| Trapezoidal (asymmetric) | 20 mm | 4° |
| Trapezoidal (asymmetric) | 27 mm | 3° |
| Standing seam / secret-fix | — | 3° |
Source: [[nzmrm_pitch]]. More in corrugate vs trapezoidal.
What is included in a long run re-roof?
Check every line on your quote:
| Item | Usually in a re-roof quote? | Published 2026 guide figure |
|---|---|---|
| Strip and dispose of old roof | Usually included; check | $15–$50/m² where charged separately [[calk]] |
| Scaffolding and edge protection | Often a separate line | $2,000–$6,000 depending on height and access [[sol_cost]] |
| New underlay, flashings, ridging | Should be included | Part of the per-m² rate [[sol_cost]] |
| Rotten battens or purlins | Usually extra, found at strip-off | Priced on discovery |
| Asbestos testing and licensed removal | Extra | $50–$150/m² removal [[ph_asb]] |
| New spouting and downpipes | Optional extra | Quoted separately |
Frequently asked questions
Sources
- Solution Roofing — How much does a roof replacement cost in New Zealand? (2026 guide) (accessed 26 Oct 2026)
- New Zealand Steel — ZINCALUME® (accessed 26 Oct 2026)
- COLORSTEEL® — Environmental categories & warranty guide (PDF) (accessed 26 Oct 2026)
- New Zealand Steel — Information Bulletin 12: Maintenance recommendations (PDF) (accessed 26 Oct 2026)
- BRANZ — Study report SR248: Life cycle costs and analysis of roof cladding systems (PDF) (accessed 26 Oct 2026)
- NZ Metal Roofing Manufacturers — Code of Practice: minimum roof cladding pitch (accessed 26 Oct 2026)
Prices are published planning ranges, not quotes. See our editorial policy.