What is AS2047 standard for aluminum windows?
AS/NZS 2047 explained for aluminium windows—wind, water, air performance, NCC, WERS, and what to verify before you buy.
What Is the AS2047 Standard for Aluminum Windows?
You’re comparing aluminium window quotes in Australia and every second line says “AS2047 compliant”—but the PDF never lands in your inbox. Here’s the plain version: AS/NZS 2047 isn’t a brand or a metal grade. It’s the performance standard for windows and external glazed doors in buildings, and it’s how most products prove they’re fit for wind, rain, and daily use before your certifier signs off.
AS2047 in one sentence (and why aluminium keeps showing up)
The published standard is AS/NZS 2047 (Windows and external glazed doors in buildings). It sets minimum performance requirements and how compliance is demonstrated (testing, calculation, or defined pathways in the standard).
Aluminium windows dominate the Australian market, so suppliers talk about AS2047 constantly—but the standard applies to the whole window unit (frame + glass + seals + hardware), not to “aluminium” alone. Timber and uPVC systems use the same performance logic when they’re sold as external windows.
How AS2047 fits into Australian building rules
Australia’s National Construction Code (NCC) expects external windows and glazed doors to meet appropriate performance. In practice, that usually means showing compliance with AS/NZS 2047 (often together with AS 1288 for glass selection and safety).
Think of it in layers:
NCC — what the building must achieve (safety, weather, energy provisions as applicable).
AS/NZS 2047 — how the window product proves structural, water, and air performance for declared sizes and configurations.
WERS — separate energy rating labelling; useful for comfort and bills, not a substitute for 2047 weather/structural proof.
What this means for you: “WERS 5 stars” doesn’t automatically mean “passed AS2047 for my large opening in a high-wind suburb.” Ask for both, scoped to your exact unit size and location.
What AS2047 actually tests (the window as a system)
Compliance is about the assembled product, installed and tested as designed. Typical performance families include:
Performance area | What buyers should care about |
|---|---|
Structural / wind | Frame and sash stay safe and functional under design wind actions for the declared rating |
Deflection / serviceability | Excessive sag or racking that affects seals and operation is limited |
Water penetration resistance | Rain and spray tests at declared pressure—water must not enter beyond allowed limits |
Air infiltration | Unwanted air leakage through the closed unit is controlled |
Operation (openables) | Opening/closing forces and limits where the standard applies |
Glass interface | Works with AS 1288 rules on glass type, thickness, and safety for the application |
Frame (aluminium)
The extrusion alloy and finish matter for life and corrosion, but AS2047 certification is on the window system, not a standalone profile stamp. Thermal-break vs non-thermal-break changes comfort and energy; 2047 still asks whether that configuration passes for that size.
Glass
Larger panes, thicker laminates, and double-glazed units change loads and deflection. A compliant small window doesn’t prove a wide slider in the same series.
Hardware
Hinges, locks, and rollers are part of the test specimen. Cheap hardware swaps after certification can void the logic of the report—stick to approved component lists.
Installation
Even a certified unit fails in real life if flashings, sealants, and drainage are wrong. 2047 is product performance; site waterproofing is still your installer’s discipline and the broader NCC weatherproofing detail.
AS2047 vs other labels you’ll see on quotes
Label | What it is | What it isn’t |
|---|---|---|
AS/NZS 2047 | Structural, water, air performance for the window/door unit | An automatic pass for every size you want to build |
WERS | Energy rating for heating/cooling transfer | Proof of water tightness or wind capacity |
AS 1288 | Glass in buildings (safety, human impact, etc.) | A replacement for whole-window 2047 testing |
“Tested aluminium profile” | Material or section data | Full window compliance unless tied to a 2047 report for the full unit |
How wind region and window size change the answer
AS2047 compliance is configuration-specific. A supplier should map:
Wind actions for your site (derived from Australian wind load practice, commonly linked to AS/NZS 1170.2 in design).
Window type (awning, sliding, casement, fixed).
Dimensions and glass makeup.
Declared performance level or test results for that combination.
Scenario guide
You are… | Practical check |
|---|---|
Homeowner renovating | Ask for the compliance statement covering your opening size and suburb exposure—not a generic brochure |
Builder / certifier | Match report pressure levels and dimensions to plans; watch substitutions |
Importer | Ensure Australian tests cover maximum marketed sizes; don’t extrapolate without engineering sign-off |
Coastal site | 2047 water resistance + correct install details; also specify finish and marine hardware |
High-rise or exposed ridge | Often drives higher structural demand—verify largest façades first |
Energy-focused buyer | Pair 2047 weather/structural proof with WERS for the same glazing line |
Myth vs fact
Myth: “All aluminum windows in Australia are AS2047 certified.”
Fact: Certification applies to defined models and size ranges that have been tested or otherwise demonstrated. An aluminium frame without a valid 2047 scope for your exact unit is just metal until proven.
FAQ
What is AS2047 standard for aluminum windows?
It’s AS/NZS 2047, the Australian/New Zealand standard for windows and external glazed doors, covering performance like wind resistance, water tightness, and air infiltration. Aluminium windows must meet it as complete units, not as raw extrusion only.
Is AS2047 required for all windows in Australia?
External windows and glazed doors in NCC-regulated building work generally need to demonstrate appropriate performance; AS/NZS 2047 is the usual product pathway. Always confirm with your certifier and project specs.
What’s the difference between AS2047 and WERS?
AS/NZS 2047 focuses on structural and weather performance; WERS rates energy transfer for comfort and efficiency. You want the right evidence for each question you’re asking.
Does one AS2047 certificate cover every window size?
No. Reports list approved configurations and maximum sizes. Oversizing or changing glass/hardware outside the scope needs new assessment or testing.
How does AS2047 relate to glass standards?
AS 1288 governs glass selection and safety in buildings. AS/NZS 2047 tests the whole window with that glass installed as part of the system.
Can imported aluminum windows use overseas test reports only?
Overseas data might inform engineering, but Australian projects typically require evidence accepted under AS/NZS 2047 pathways and local rules. Treat non-AU reports as supplementary until your engineer or certifier agrees.
Bottom line
AS/NZS 2047 is the core performance standard behind “compliant” aluminum windows in Australia—but compliance is per system, per size, per rating, not a blanket label on the word “aluminium.” Before you pay a deposit, match the report scope to your largest openings, wind exposure, and glass spec, and keep installation on the checklist.
Pre-purchase checklist
Request AS/NZS 2047 compliance documentation for your exact type, size, and performance level.
Cross-check WERS and AS 1288 glass requirements separately—don’t merge them mentally.
Confirm install details (flashing, drainage, sealants) with your installer; product certification doesn’t fix site errors.