Specialist Metal Roofing Auckland | Architectural & High-Performance Solutions

Onyx Roofing delivers specialist metal roofing in Auckland for projects that demand technical accuracy, material intelligence, and fault-intolerant execution. Our work focuses on high-performance metal systems – steel and aluminium -engineered for architectural complexity, coastal exposure, and high-wind environments. As We are licensed roofing contractors in Auckland, providing a variety of roofing services., we operate beyond standard residential roofing. We design, fabricate, and install advanced metal roofing and cladding systems that exceed baseline compliance and perform predictably over decades.

Beyond the Basics: What Defines a Metal Roofing Specialist?

Specialist metal roofing is a discipline.

It requires more than familiarity with profiles or fixings. A true specialist understands how materials behave over time, how buildings move, and how environmental forces compound failure at weak points.

At Onyx Roofing, specialist capability includes:

Accurate interpretation of architectural and construction documentation

Custom fabrication of flashings for complex junctions, parapets, and interfaces

Advanced substrate selection for severe marine and high-corrosion zones

Installation of concealed-fixing and standing seam systems with strict tolerances

Control of thermal expansion, wind uplift, and long-term water migration

This level of execution is essential for architecturally designed homes, commercial buildings, and exposed coastal properties where failure is not an option.

Our Specialist Service Portfolio

Architectural Metal Roofing Systems

We’re a team of hardworking Kiwis dedicated to delivering top-quality roofing solutions across Auckland. As a small business with big ambitions, we’ve built our reputation on honesty, craftsmanship, and a commitment to getting the job done right.

From new roof installations to full roof replacements and guttering, we bring the same level of care and precision to every project, no matter the size. We believe in using the best materials, industry-leading techniques, and a down-to-earth approach that keeps things simple and stress-free for our clients.

Complex Re-Roofing & Structural Conversions

Converting legacy roofing systems – tile, membrane, or asbestos – requires more than replacement.

We specialise in complex re-roofing projects, where structural load reduction, modern drainage design, and upgraded weathertightness detailing must be addressed simultaneously. High-tensile metal systems offer superior strength-to-weight ratios, but only when correctly engineered and installed.

Our approach ensures the new roofing system integrates seamlessly with the existing structure while delivering long-term performance improvements.

Custom Flashings & Rainwater Engineering

Roof failures are rarely caused by the sheet – they occur at the junction.

We design and fabricate project-specific flashings, gutters, and rainwater systems to manage water flow across complex roof geometries. Valleys, parapets, penetrations, and wall interfaces are resolved with purpose-built detailing rather than generic solutions.

This level of precision is fundamental to specialist metal roofing and is critical to preventing future water ingress.

Metal Wall Cladding

Roofing performance does not stop at the roofline.

We deliver integrated metal wall cladding systems that align structurally and visually with the roofing envelope. This unified approach improves weather resistance, architectural continuity, and durability, particularly in exposed environments.

The Specialist Process: Precision from Concept to Completion

Technical Evaluation & Design Collaboration:

We begin with a technical assessment of architectural plans, environmental exposure, and risk factors. Where required, we collaborate directly with architects and designers to refine detailing and ensure system compatibility.

Substrate & Profile Specification:

Each project receives a purpose-matched roofing system, selected for corrosion resistance, movement control, pitch suitability, and visual outcome. No assumptions or generic specifications.

LBP-Led Installation Control

All critical weathertightness work is executed under Licensed Building Practitioner (LBP) supervision. This ensures regulatory compliance, accountability, and workmanship consistency across every stage of installation.

Quality Assurance

Final inspections focus on seam integrity, fixing security, drainage efficiency, and detailing accuracy

FAQs Frequently Asked Questions for Specialist Roofing

Aluminium is often the preferred choice for coastal and beachfront properties in Auckland. Unlike steel, aluminium does not rust and offers superior resistance to salt spray and atmospheric corrosion, making it well suited to severe marine environments. While high-grade steel systems perform well inland, aluminium delivers greater durability and long-term performance where corrosion risk is high. Material selection should always be based on proximity to the coast, exposure conditions, and desired service life.
Aluminium is often the preferred choice for coastal and beachfront properties in Auckland. Unlike steel, aluminium does not rust and offers superior resistance to salt spray and atmospheric corrosion, making it well suited to severe marine environments. While high-grade steel systems perform well inland, aluminium delivers greater durability and long-term performance where corrosion risk is high. Material selection should always be based on proximity to the coast, exposure conditions, and desired service life.

Concealed fixing systems hide fasteners beneath the roofing panels rather than exposing them to the weather.
This provides two key benefits:

  • Reduced leak risk, as there are fewer penetrations through the roof surface.
  • Cleaner architectural appearance, with uninterrupted lines and no visible screws

Concealed fixings also allow controlled thermal movement of the metal, which is critical for long-term performance in standing seam and Euro-style roofing systems.

Yes. A specialist metal roofer can work alongside architects, designers, and builders during the design and specification stage.
This collaboration helps ensure that roofing systems are:

  • Technically feasible
  • Correctly detailed for weathertightness
  • Matched to the building’s exposure and environment


Specialist input at the design stage reduces construction risk and improves long-term performance.

Specialist metal roofing involves two separate forms of warranty:

  • Material warranties, provided by the manufacturer, covering corrosion resistance and coating performance
  • Workmanship guarantees, covering the quality and accuracy of installation


Correct specification and specialist installation are essential for both warranties to remain valid.

Consult an Auckland Roofing Specialist

Specialist metal roofing demands informed decisions.

If your project involves architectural detailing, coastal exposure, complex junctions, or long-term performance requirements, early engagement with a metal roofing specialist in Auckland is critical. Correct material selection, system specification, and detailing decisions made at the outset directly affect durability, compliance, and whole-of-life performance.

Onyx Roofing works with homeowners, architects, builders, and commercial clients to provide technical clarity before installation begins. This includes reviewing design intent, exposure conditions, and roofing systems to ensure they are appropriate for Auckland’s environment and regulatory requirements.

Speak with a Specialist

Use our consultation process to discuss:

  • Architectural roofing profiles and concealed-fixing systems
  • Steel versus aluminium selection for coastal or exposed sites
  • Technical detailing at junctions, penetrations, and interfaces
  • Re-roofing feasibility and conversion strategies
  • Compliance, buildability, and installation considerations