ZEKIN Aluminum Double House Front Entry Luxury Glass Door
Anti-theft front exterior double entry doors featuring thermally isolated architectural extrusions, multi-point locking perimeter, and acoustic insulated double glazed inserts.
Get a Quote180,000m²
State-of-the-Art Factory Floor
25+
Years Engineering Expertise
AS/NZS
Certified AS 2047 & NZS 4284
100%
Full CAD Shop Detailing
Precision Structural Glazing & Fenestration
High-Performance Architectural Openings for NZ Projects
Engineered for harsh southern hemisphere ultraviolet exposure, heavy precipitation, and extreme wind load conditions. Fully configured to align with your project door and window schedules.
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Engineering White Paper · New Zealand Fenestration
Precision Structural Envelope Engineering for Aotearoa's Harsh Microclimates
From the exposed wind tunnels of Wellington to the geothermal humidity of Rotorua and maritime salt fog of Auckland, skylight and window systems must be precision engineered against distinct microclimates.
High-UV Solar Control in Central Otago & Northland
Due to the Southern Hemisphere ozone layer characteristics, New Zealand registers solar ultraviolet radiation levels nearly 40% higher than equivalent European latitudes during peak summer. Unprotected overhead glazing transforms interiors into heat traps. Our engineered roof windows incorporate soft-coat double Low-E glazing with high-purity argon fill, reflecting non-visible infrared while achieving an optimum Solar Heat Gain Coefficient (SHGC < 0.35) and stopping 99% of interior furnishing UV fade.
Extra High Wind Zone (EH / SED) Pressure Defense
Under NZS 3604 structural wind classifications, coastal headlands across Wellington, the Cook Strait, and Banks Peninsula frequently encounter Serviceability (SLS) and Ultimate Limit State (ULS) wind loads exceeding 2.5 kPa. Our aluminium skylights utilize reinforced hollow extrusions of architectural grade 6063-T6 alloy with corner joints mechanically joined and structural-silicone bonded, preventing deflection, air infiltration, and frame fatigue during cyclical gusts.
Maritime Salt Spray & Marine Corrosion Resistance
With virtually no location in New Zealand situated further than 130 kilometres from the ocean, airborne sodium chlorides degrade conventional joinery. Every extruded aluminum skylight window profile dispatched to NZ undergo multi-stage chemical pre-treatment and qualifies for Qualicoat Class 2 or seaside-grade architectural powder coating (>65-80 microns) with stainless steel 316 hardware, avoiding galvanic pitting and corrosion creep.
Regulatory Compliance & Structural Shifts
Navigating the 5th Edition NZBC Clause H1 Energy Efficiency Overhaul
The updated New Zealand Building Code (NZBC) Clause H1 has reset compliance benchmarks for roofs, skylights, and vertical envelope fenestration nationwide.
The Strict Transition from R0.26 to R0.37–R0.62+ Glazing Systems
Historically, legacy residential builds across New Zealand utilized non-thermally broken frames and standard single or air-filled double glazing, yielding thermal values lower than R0.30 m²·K/W. Under the updated NZBC H1 Schedule Method (covering Climate Zones 1 through 6), skylights and roof windows are subjected to aggressive minimum construction thermal targets.
To exceed the H1 Energy Efficiency 5th Edition, DERCHI integrates continuous polyamide insulation barriers (PA66 GF25) within the primary profile. Paired with warm-edge composite spacers and inert gas fill, our assemblies deliver total unit thermal resistance values that comfortably satisfy and exceed Auckland, Christchurch, and Queenstown residential specifications.
Key Regulatory Highlights for NZ Specifiers
- NZS 4223.4: Mandatory safety glazing specifications for overhead sloped glass units.
- NZS 4284: Building envelope water penetration and cyclical structural compliance testing.
- Condensation Mitigation: Eliminating internal frame weeping to prevent mold growth under indoor humidity.
- Embodied Carbon Reduction: High recyclability and durable multi-decade lifespan of architectural-grade aluminium profiles.
| Performance Characteristic | Legacy Kiwi Roof Window | DERCHI Polyamide Thermal Break Skylight | Structural Compliance Standard |
|---|---|---|---|
| Overall U-Value / R-Value | U-value ~3.8 (R0.26 m²·K/W) | U-value 1.6–1.9 (R0.53–R0.62 m²·K/W) | NZBC Clause H1 (5th Edition) |
| Overhead Safety Glass | Standard Monolithic / Float | Toughened Exterior + PVB Laminated Interior | NZS 4223.4 Glazing Overhead Code |
| Extrusion Metallurgy | Generic Recycled Ingot | Primary Billet 6063-T6 Pure Architectural Alloy | AS/NZS 1866 Standard Specification |
| Water Tightness Pressure | 300 Pa to 450 Pa Limit | Up to 1500 Pa Cyclical Water Barrier | NZS 4284 / AS 2047 Verification Methods |
| Coastal Finish Warranty | Surface chalking in 24 months | Interpon / Jotun Seaside AkzoNobel 15-25 Yr | AAMA 2604 / Qualicoat Class 2 Standard |
Precision Manufacturing & Global Supply Chain
Why Tier-1 NZ Developers Direct-Source from DERCHI
Combining a massive 180,000 square meter industrial manufacturing base in Foshan with bespoke engineering for foreign commercial and high-end residential builders.
180,000 m² Production Powerhouse
Operated by Guangdong Dejiyoupin Doors and Windows Co., Ltd., our industrial complex utilizes precision European CNC 4-axis and 5-axis profile cutting centres, automated corner-crimping suites, and automated glass sealing lines capable of handling multi-container residential orders without lead-time variability.
Detailed CAD Shop Drawings Included
Before metal is milled or glass processed, our senior facade structural engineers prepare complete architectural CAD shop drawings, connection details, flashing interfaces, and structural load calculations. This guarantees zero misalignment against NZ rough openings and builder cavity battens.
100+ Global Certifications & Patents
With rigorous testing records spanning AS 2047, AS 1288, CE, ISO 9001, and North American UL certifications, DERCHI delivers proven engineering documentation to assist licensed building practitioners (LBPs) and council inspectors through the Building Consent approval workflow.
Procurement Transparency
New Zealand Skylight & Window Sourcing FAQ
Direct answers for Kiwi property developers, architects, quantity surveyors, and project builders procuring factory-direct openings from China.
Do your skylights comply with NZBC Acceptable Solution E2/AS1 weathertightness details?
Yes. A primary risk factor in New Zealand overhead glazing is roof flashing integration. Our skylights are fabricated with integrated custom perimeter kerb upstands and channel receivers designed to seamlessly accept apron flashings, back-tray metal flashings, or EPDM warm-roof waterproofing membranes consistent with NZBC E2/AS1 Section 8.0.
What glass build-up is specified to satisfy NZS 4223.4 overhead safety requirements?
In strict compliance with NZS 4223 Part 4, all overhead skylight windows are fabricated using a stepped insulated glass unit (IGU): the exterior pane is toughened impact safety glass to withstand hail storm impact and heavy snow loads, while the interior pane is composed of PVB or SGP laminated safety glass. If broken, the laminated interlayer securely holds the shards, preventing injury to building occupants below.
Can your factory achieve the high thermal R-values needed for Climate Zones 5 and 6?
Yes. For cold South Island alpine regions including Queenstown, Wanaka, and Invercargill (Zones 5 & 6), we configure our deep 75mm or 80mm polyamide thermally broken series with warm-edge spacers, 95% argon gas fill, and double high-performance soft Low-E coatings. We also engineer triple-glazed skylight panels capable of exceeding R0.80 m²·K/W for Passive House builds.
How are shipments packaged to prevent transit damage to ports like Auckland, Tauranga, or Lyttelton?
Every window and skylight frame is protected with blue peelable protective film, wrapped in heavy-density shock-absorbing bubble wrap, protected by rigid composite corner guards, and sealed inside fully enclosed, fumigated, export-grade plywood crates. Crates are loaded with desiccants, banded to steel container floor rings, and photographed prior to dispatch.
What lead-times should Kiwi builders factor into their construction Gantt charts?
Typically, standard engineered production requires 25 to 35 calendar days following CAD sign-off and color confirmation. Ocean transit to Auckland or Tauranga port averages 18 to 24 days. We advise integrating a 7 to 9-week window from finalized shop drawings to jobsite delivery to ensure smooth staging with your roofing installers.
Can we combine our skylight order with custom entry doors and architectural sliders?
Absolutely. Consolidating your complete fenestration schedule into unified 20GP or 40HQ container shipments is one of DERCHI's primary competitive strengths. You can consolidate overhead skylights, cast aluminium main entry pivot doors, soundproof hung sashes, and interior sliding partitions under one invoice, one bill of lading, and one quality warranty.
Ready to Optimize Your Project's Glazing Envelope?
Send us your architectural door & window schedules, elevation plans, or opening dimensions. Our fluent English-speaking facade engineering specialists provide full CAD shop drawings, AS/NZS compliance confirmations, and direct factory pricing within 24 hours.