Renovating and want to change your home's silver or white aluminium windows to a trendy black frame, space grey or champagne gold to match your overall style? Recolouring aluminium windows sounds simple, but it actually involves adhesion, durability and the method used — done poorly, the colour can flake and patch within a short time. This article compares four methods from a technician's perspective — DIY spray paint, on-site coating, factory recoating and window replacement — to help you pick the most worthwhile and durable option.
Why Recolour Aluminium Windows?
Owners usually want to recolour their aluminium windows for a few reasons.
Matching the renovation style. Black frames, space grey and champagne gold have become hugely popular in recent years, and many owners renovating their whole home want the window colour to blend with the flooring, walls and furniture for an industrial or minimalist modern look.
Faded appearance of old windows. On older aluminium windows, the surface powder coating may fade, develop oxidised white spots or peel in places, making them look worn — so owners want to freshen up the appearance.
Saving money by not replacing the whole window. Some owners feel the window body is still usable and only want to change the colour, so they consider recolouring rather than replacement. Whether it is worthwhile is analysed below.
Comparing the 4 Methods of Recolouring Aluminium Windows
There are four main ways to recolour aluminium windows, and they differ greatly in adhesion, durability and cost.
| Method | Adhesion / durability | Appearance | Cost | Characteristics |
|---|---|---|---|---|
| DIY spray paint | Lowest, peels easily | Uneven | Cheapest | Colour wears off quickly at friction points |
| On-site manual coating | Average | Moderate | Medium | Hard to control evenness on-site |
| Factory recoating (removed) | Better | Close to original | High | Requires removing windows, long lead time |
| New factory-coated windows | Best, most durable | Original standard colours | Highest | Renews window body and hardware at once |
1. DIY spray paint: Buying spray paint from a hardware store and doing it yourself costs the least, but aluminium surfaces are smooth and ordinary spray paint adheres poorly; combined with the constant stress at the sash's friction points, it soon wears off and looks patchy — only a short-term stopgap.
2. On-site manual coating / spraying: A technician sands and sprays on site, which is more even than DIY, but on-site dust, humidity and temperature are hard to control, so coating evenness and durability remain limited and peeling can still appear after a few years.
3. Removing and sending to a factory for recoating: The windows are removed and sent to a factory to be recoloured with powder coating, giving results closest to original quality. But it requires removing the windows, has a long lead time and higher cost, and the removal-and-reinstallation process may affect the window body and sealing, so waterproofing must be redone afterwards.
4. Replacing with new factory-coated windows: Directly replacing with brand-new aluminium windows in original standard coated colours (such as black, space grey or champagne gold) gives even, durable colour, and lets you renew the hinges, handles and weatherseals at the same time — all in one go.
Recolour vs Replace: How to Choose?
Whether you should recolour or replace comes down to the current condition of the window body.
If the window body is in good condition and you purely want a colour change: the hinges, handles, weatherseals and coating are all intact and you just want to match the renovation — professional factory recoating is worth considering, but be prepared that the cost may not differ greatly from a new window.
If the window already has problems: oxidised hinges, loose handles, hardened and shrunken weatherseals, or peeling coating — in this case, recolouring alone is merely "make-up" and the underlying issues remain. Rather than paying for recoating and needing repairs again in a few years, it is better to replace with new windows and resolve everything at once; see repair or replace your aluminium windows to help decide.
Declaration considerations: simply recolouring existing aluminium windows generally does not involve the wall structure and usually requires no declaration to the Buildings Department. However, full window replacement is alteration work involving the wall structure, classified as Class 2 minor works, and must comply with Class 2 Minor Works declaration; for details, see aluminium window minor works declaration.
Real Scenario: An Owner Wanting All-Black Frames for an Industrial Look
The owner of a private flat in Kwun Tong wanted to change all the silver aluminium windows to black frames during renovation, to match an industrial design. After an on-site assessment, the technician found that besides the colour, some of the hinges had oxidised and the weatherseals had hardened and shrunk.
The technician gave an honest analysis: if only recoating for colour, the hinge and weatherseal problems would remain, and within a year or two the windows would still need to be removed for repair — effectively paying twice. In the end the owner chose to replace with brand-new black factory-coated aluminium windows, renewing the hardware and waterproofing at the same time. The work was declared as Class 2 minor works, achieving the ideal colour match while also resolving the potential hinge and seepage issues.
Frequently Asked Questions
How long does aluminium window spray paint last?
It depends on the method. DIY spray paint usually wears off at the friction points within a few months to a year or two; professional on-site coating generally lasts a few years; factory powder coating and original factory coating are the most durable, lasting over ten years. For long-lasting results, a new window with original factory coating is the most reliable.
Does recolouring affect the window's maintenance or warranty?
Self-applied spray paint or third-party recoating is generally not covered by the original window's warranty, and any future coating problems would be at your own cost. By contrast, choosing brand-new factory-coated aluminium windows means the colour and window body are both original, and Amgen also provides a workmanship warranty for greater assurance.
Do black-framed windows get especially hot or show dust easily?
Dark window frames do reach higher surface temperatures under sunlight, but this mainly affects the frame itself; indoor temperature depends more on the glass choice (such as insulated or heat-reducing glass). As for dust, there is little real difference between light and dark colours — regular cleaning keeps them looking good.
Recolouring Aluminium Windows — First Check the Window's Condition
Whether recolouring aluminium windows is worth it comes down to the condition of the window body itself. Rather than putting "make-up" on a problematic window, it is better to assess early and renew it properly in one go. Amgen Aluminium Windows holds licence MWC 316/2021 and offers one-stop replacement, repair and waterproofing services, with free on-site assessment across all 18 districts of Hong Kong.
For enquiries, WhatsApp us at 6586 3435 to book a technician visit with peace of mind.
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