Can you paint aluminium window frames? It’s a natural question to ask if your glazing has become dated, the finish is flaking, or you just fancy a switch-up.
At the Nottingham Window Company, we often receive queries of this nature from homeowners across our operating area of the East Midlands, and we usually say the same thing.
Yes, aluminium windows can be painted, but it’s rarely a good idea to tackle the job yourself.
Aluminium windows, particularly those finished in a RAL colour, are coated, engineered and foiled in a very specific way, which means one wrong step can lead to flaking, corrosion or worse still, voided warranties – which we’ll explore in this blog.
Can you repaint aluminium window frames?
You can paint aluminium window frames, but it’s far more complex than painting wood or uPVC windows.
Aluminium surfaces are protected with a specialist powder coating designed to resist rust, UV rays, rain and temperature changes. Once you start sanding, masking or using the wrong type of paint, you risk damaging the powder coat and the frame beneath it.
Because aluminium doesn’t behave like normal metal surfaces, repainting is best left to trained specialists with the right tools, paints, primers and preparation techniques. It’s a matter of priorities; if you’re desperate to make a change, then it can be done, but if you’re keen to maintain the performance of your glazing, it’s best left to the professionals.
Why professional expertise is essential
Restoring aluminium frames is a skilled job. A good idea can quickly become a costly hassle when DIY techniques go wrong.
Warranties at risk
Many aluminium windows and aluminium doors come with long warranties. Any attempt to strip or repaint the window frame yourself can void your cover. At The Nottingham Window Company we use certified installers and every aluminium window comes with QANW Insurance Backed Warranties for peace of mind.
The challenge of proper preparation
The first step when repainting aluminium frames is preparation, and this is where most DIY attempts fail. Aluminium requires:
- Careful cleaning with warm water and a mild detergent
- Removing grime and residue with a soft cloth
- Precise masking using painter’s tape or masking tape
- Skilled sanding to avoid scratching the powder coat
- Priming with the correct epoxy or aluminium paint primer
If anything goes wrong, such as uneven areas, too much pressure with sandpaper, or missed imperfections, your final paint job will flake, blister or warp within a couple of months.
Damage to the coating and performance
Aluminium frames rely on their powder coating for durability. Incorrect preparation or the wrong type of paint, such as thick coats or acrylic paint not designed for metal surfaces, can reduce the lifespan of your frames, affect thermal efficiency or trap moisture, which encourages corrosion.
Why painting old flaking windows yourself isn’t worth it
Once aluminium begins to show signs of deterioration, a coat of paint isn’t the easy way out. Old paint, toxic fumes from spray paint, poor adhesion and drips from a paintbrush or roller all create further imperfections. Professionals use the right protective gear, specialist tools and thin coats of paint to guarantee a flawless finish.
Replacement aluminium windows from The Nottingham Window Company
Sometimes the best fix for tired aluminium frames is upgrading them altogether. Our aluminium windows are a popular choice for homeowners looking for a modern, durable and secure option backed by high performance.
Casement aluminium windows
- The UK’s most popular window style
- Open outwards from the side or top
- Slim sightlines and a clean, modern appearance
- Great way to improve energy efficiency thanks to advanced thermal breaks
Tilt and turn aluminium windows
- Operate in two ways: tilt inwards for ventilation or fully turn for easy cleaning
- Ideal for upstairs rooms
- Secure and practical with multi-point locking
Sliding sash aluminium windows
- Vertical opening for traditional character
- Smooth operation with modern aluminium durability
- Perfect for period homes wanting a modern performance upgrade
Aluminium window colours
Our aluminium frames can be customised in a limitless spectrum of RAL colours, including greys, blues, creams and woodgrain effects. Whether you want a bold colour or a classic gloss finish, we tailor everything to suit the look of your home.
FAQ
How do professionals clean aluminium window frames before painting?
Experts use warm water, mild detergent and often vinegar to remove grime without scratching the surface. This careful cleaning allows the primer to adhere properly.
What types of paint are used on aluminium?
Specialist epoxy primers and aluminium paint are used, followed by thin coats of paint built up slowly to avoid drips or flake issues.
Why does powder coating matter?
Powder coating is a factory-applied finish that protects aluminium from rust, moisture and UV rays. Damaging this surface during DIY painting reduces durability.
Who are The Nottingham Window Company?
We are Nottingham, Leicester and Derby’s trusted double glazing specialists, known for family values, honest service and high quality windows, doors and glazed extensions. Quality assured by CERTASS and backed by QANW Insurance Warranties, our team delivers workmanship you can rely on.
Visit our extensive showroom in West Bridgford to see our aluminium windows, Residence 7 and Residence 9 windows, sliding sash styles, roof lanterns and more.
Get a free quote today or book an appointment with our expert team on 0115 866 00 66.
In summary
- Aluminium frames can be painted, but it is rarely straightforward
- DIY painting risks damage, flaking and invalid warranties
- Professionals understand the right tools, primers and surface preparation
- Replacement aluminium windows offer long term durability and security
- The Nottingham Window Company provides expert guidance, installation and aftercare
