A common question after install is whether a dark exterior can be switched to a lighter color, or whether a scratched corner can be touched up with exterior paint. Both questions come down to the same thing: can you paint aluminum clad windows?
Short answer: it can be done, but it is not what the cladding is designed for. The exterior color is a factory powder coat, a field repaint will not match it in finish or durability, and repainting on your own may affect warranty coverage, so check the written terms first. Choose the color once, at the order stage, and treat repainting as a last resort.
I source aluminum-clad wood windows from Europe, and the color decision is one of the first things we settle on every clad project. Here is why.
Why the factory finish is hard to copy on site
On a clad window, the exterior is an extruded aluminum shell clipped over the timber, and its color is a powder coat applied and cured at the factory. Powder is sprayed on in a controlled booth and baked, which gives a hard, even layer. A brush or roller on an installed window starts from a different place: weather, dust, awkward reach, no oven.
Typical problems with field-applied coatings are visible brush or lap marks, a different sheen than the factory finish, and paint that lifts at edges. None of that is a reason to panic about a small scratch, but it is a reason not to treat repainting as a casual weekend job.
What a major US brand says
If you want a data point from the US market, Andersen's help center is direct about its own aluminum-clad products: it says to "do not attempt to paint or apply other finishes to the aluminum cladding," because it may affect the owner warranty (Andersen help center, accessed October 2026). That applies to Andersen's products, not to every window, but the logic carries over: a factory finish plus a factory warranty is a package, and a field coating sits outside it.
For the full side-by-side with that brand, see my Andersen clad vs European aluminum-clad wood comparison.
What I specify instead
On the European clad lines I quote (Clad Flush, Clad Hidden Sash and Clad Passive), the exterior is a powder-coated aluminum shell. The options on the aluminum-clad wood windows page are any RAL powder coat, matte or textured, or a wood-grain decor, depending on the selected cladding. My process is simple:
- Get the color early. Architects usually have a RAL number on the drawing. I ask for it before shop drawings, not after.
- Look at a physical sample. Screens lie, and dark colors look different in sun than on a monitor. My colors and finishes page shows the palette, and the European window colors guide explains RAL, anodized and dual-color options.
- Know the coating standard. Architectural coatings are commonly specified to AAMA 2604 or AAMA 2605. In published summaries, 2604 calls for 3,000 hours of salt spray and at least 30% gloss retention, and 2605 for 4,000 hours and at least 50% (AMICO Architectural, accessed October 2026). I confirm the coating standard in the quote for your exact order rather than promising a coating lifespan.
- Read the finish warranty before touching it. My 10-year written warranty lists standard powder-coated factory finishes as a covered item and sets out exclusions such as normal fading. Anodized and specialty finishes carry their own term. Ask me before any repaint, because the answer depends on the specific order file.
Which situation are you in?
| Situation | What I would do |
|---|---|
| Light scratch or chip on a frame | Clean it first. Ask for the coating supplier's touch-up guidance for your color; do not guess with hardware-store paint. |
| Color has faded or chalked unevenly | Document it with photos and check the warranty before anything else. |
| You want a different exterior color | Plan it as a project: a quote for replacement units, or a coating specialist working to the coating supplier's written preparation steps. |
| Interior wood needs refinishing | This is normal. The timber finish is separate from the cladding and can be stained, oiled, lacquered or painted with compatible products. |
| Not installed yet | Best moment to change color. Tell me before production. |
If you decide to repaint anyway
Do it with eyes open. In my view the sensible order is: confirm warranty implications in writing, get the coating supplier's preparation and repair instructions for your exact finish, do a test patch in a hidden spot, and accept that sheen and texture will differ from the factory surface. Do not paint over hinges, gaskets, drainage slots or glass seals. A coating specialist is a better bet than a DIY weekend on anything larger than a touch-up.
The interior is a different story
Most of what makes clad windows appealing is the timber inside, and that side behaves like any wood finish: it can be refreshed when it needs it. If you are weighing how the two faces age, my posts on aluclad vs aluminum vs wood windows and how long wood windows last cover maintenance on both sides, and my comparison of cladding materials explains why the cladding material changes the color conversation.
If you have a clad project in the planning stage, send the schedule and your RAL choice through the estimator or the quote form. Wood and aluminum-clad wood are quoted from drawings, and lead time is confirmed per order.
FAQ
Can you paint aluminum clad windows? Physically yes, but the factory powder coat is the intended finish and a field coat will usually differ in sheen and durability. Check your warranty first, and get the coating supplier's repair guidance for your finish.
Will painting aluminum clad windows void the warranty? It can. Andersen, for example, states that painting its aluminum cladding may affect its warranty. For a Windows Guy order, ask me before any repaint so I can check the written terms against your order file.
How do I fix a scratch on aluminum cladding? Clean the area, photograph it, and ask for touch-up guidance matched to your coating and color. Generic paint rarely matches a factory powder coat.
Can I change the exterior color later? It is possible as a project but not a small job, so choose the color carefully before production, with a physical sample.
Can I paint the inside of clad wood windows? Yes. The interior timber finish is separate from the cladding. Use products compatible with the existing finish and the wood species.