Specialised fabrication
Long architectural pans, folds and system-specific clips/details require tighter coordination than ordinary exposed-fix profiles.
Architectural metal roofing
Tray and standing seam roofing in NZ: systems, widths and cost
Architectural tray and standing seam sit well above standard corrugate/five-rib pricing because the system, fabrication, detailing and installation are more specialised. Public NZ examples in RoofHub's dataset range from $130–$170/m² for one long-run tray complete-project example to $200–$280/m² for a standing-seam complete-project example.
RoofHub treats tray and standing seam as one premium category for a first-pass estimate, but the exact system should be priced separately for a real quote.
- Fixing
- Often concealed / clip fixed
- Example cover
- 340–470 mm class
- Example min pitch
- 3° on cited Espan 470
- Reviewed
- 26 Sep 2026
Pricing evidence
Published tray and standing-seam observations
| What | Typical range (NZD) | Basis | Notes |
|---|---|---|---|
| Colorsteel long-run tray roof, installed per m² | $130–$170/m² | complete project · incl GST | Auckland · Delta Roofing — Roof Replacement Cost NZ 2025 Complete Price Guide |
| Standing seam (concealed fix) roof, installed per m² | $200–$280/m² | complete project · incl GST | Auckland · Delta Roofing — Roof Replacement Cost NZ 2025 Complete Price Guide |
| Architectural tray / standing-seam family (Espan 470, Eurostyle Spanlok) — installed | $180/m² | supply install · GST not stated | NZ · Arcline Architecture — Roofing Types & Prices guide |
Scope warning: tray/standing-seam pricing is highly sensitive to the exact system, substrate/support requirements, penetrations, sheet lengths, folds and architectural details. A generic $/m² range is useful for planning but not specification.
System example
Espan 470 shows what concealed-fix tray means
Metalcraft publishes Espan 470 with a nominal 470 mm cover, 484 mm sheet width and 3° minimum pitch subject to sheet-length requirements. The sheet locks onto a clip system so the pan is not punctured by exposed fixings.
The same manufacturer also offers a narrower Espan 340 family, which is why “tray” should not be treated as one universal width.
Why the premium exists
More than just expensive sheet metal
Detailing
Penetrations, transitions, ridges, barges and junctions often need custom architectural detailing.
Substrate/support
Some systems need specific support conditions; others use clip systems direct to purlins. The selected manufacturer detail controls the requirement.
For a simpler metal roof with lower installed cost, compare corrugated roofing and five-rib roofing.
Sources
Evidence and manufacturer references
- marketDelta Roofing — Roof Replacement Cost NZ 2025 Complete Price Guide (2025) — GST included · roofer
- editorialArcline Architecture — Roofing Types & Prices guide — GST treatment not stated by source · other
- primaryMetalcraft Roofing — Espan 470 — 470 mm cover; concealed fixing; 3° minimum pitch stated · manufacturer
- primaryBuilding Performance — E2 External Moisture — New Zealand Building Code external-moisture requirements · government
FAQ
Tray and standing-seam questions
Is architectural tray the same as standing seam?
The terms overlap in everyday use, but systems differ. RoofHub groups concealed-fix architectural tray/standing-seam systems for high-level pricing while a real specification should identify the exact manufacturer profile and installation system.
Why is tray roofing more expensive than corrugate?
The premium is driven by specialised systems, detailing, fabrication and installation rather than simply the amount of steel in each square metre.
Can standing seam be used on a low-pitch roof?
Some concealed-fix tray systems can. The cited Metalcraft Espan 470 states a 3° minimum pitch subject to sheet-length requirements. Always use the exact manufacturer's current design rules.