Deep Roots in NZ
Construction
HG Windows & Doors is backed by over 20 years of NZ construction industry knowledge through our sister company, Kiwi Nails — a trusted supplier of building fixings and hardware to Auckland builders. That long-standing relationship with the industry gave us an intimate understanding of what NZ builders actually need: compliant products, clear documentation, and reliable supply.
Five years ago, we launched HG Windows & Doors to bring that same standard to aluminium joinery. We built a fully certified, vertically integrated supply chain — covering glass manufacturing, aluminium extrusion, and final assembly — so we could deliver CodeMark-certified products at genuinely competitive prices.
Today, HG holds CodeMark Product Certificate CMNZ70173 (Bureau Veritas), BRANZ-tested R-values, and CSi PAS-Mark certified glazing. We serve townhouse developers, volume builders, and residential builders across the Auckland region and surrounding North Island areas.
HG assembly facility, East Tamaki, Auckland
Vertically Integrated.
Quality at Every Step.
HG operates a fully vertically integrated supply chain — from glass manufacturing and aluminium extrusion through to final assembly and quality control. Every stage is certified and traceable. We use Technoform thermal break strips — the same PA66 GF25 polyamide insulating barrier used by leading European window manufacturers — because we don't cut corners on the components that matter.
Glass components are manufactured to CSi PAS-Mark standards (AS/NZS 2208:2023 and NZS 4223.2:2016) and imported to New Zealand. Final assembly and quality control is carried out at our Auckland facility in East Tamaki.
- Vertically integrated — glass, extrusion, and assembly all under one quality system
- Technoform thermal break strips — the same PA66 GF25 polyamide used by leading European manufacturers
- CSi PAS-Mark certified glass components (AS/NZS 2208:2023 & NZS 4223.2:2016)
- Auckland-based assembly and final quality control
- Full batch traceability under ISO 9001 — no shortcuts, every component traceable
Every Stage Inspected. Every Batch Traceable.
Seven mandatory checkpoints from raw material to dispatch — no stage is skipped.
All inspections recorded and batch-traceable under ISO 9001. Non-conforming units are quarantined and logged before any rework or disposal.
What We Stand For
Compliance First
CodeMark certified. BCAs must accept our products. We take compliance seriously so you don't have to worry about it.
Honest Performance
BRANZ-tested R-values. Not marketing claims — independently verified numbers you can use with confidence in H1 calculations.
Competitive Pricing
Vertical integration means we can offer CodeMark-certified products at prices that don't require a premium budget.
Reliable Supply
Consistent quality, every order. ISO 9001 quality management means the same product every time, project after project.
Built to Last
Aluminium is one of the most recyclable materials in the world. HG windows and doors are designed for long service life — B2 Durability compliance under the New Zealand Building Code requires a minimum 15-year service life for external joinery (B2.3.1(b)).
Our thermally broken TBAW series and Low-E DGU Argon glazing contribute to H1 Energy Efficiency compliance, reducing the heating and cooling energy demand of buildings throughout Auckland and the North Island.
Ready to Work with HG?
Upload your building consent drawings for a free, detailed quote. Or contact us to discuss your project requirements.