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Can You Paint Aluminium Window and Door Frames?


Aluminium windows and doors have been around for over a century, and they've only gotten more popular over time. Loved for their sleek looks, durability, and long lifespan, they can be found in both homes and businesses all over the world.

Thanks to their damage-resistant materials, aluminium doors and windows rarely need repainting. With that said, you may be wondering if it's safe to repaint them if you feel like switching up their appearance.

The good news: yes, you can paint aluminium window and door frames. But, before you pick up your paintbrush, there are a few things you should keep in mind.

Alimax are Dorset and Hampshire's go-to manufacturers of premium aluminium windows and doors. Read on for our comprehensive guide to painting aluminium frames, from the paint you should use to the steps you need to follow.

What Type of Paint Should You Use on Aluminium Window and Door Frames?

There are two main types of paint you can use on aluminium: acrylic and epoxy.

Acrylic paint provides good adhesion, durability, and resistance to fading, but may not last as long as epoxy.

Epoxy paints offer excellent durability, chemical resistance, and adhesion. They can withstand harsh weather conditions and provide a long-lasting finish, even on exteriors. However, they tend to be more expensive than acrylic.

Aluminium frames are resistant to corrosion, but it may be worth using an acrylic or epoxy paint specifically formulated with corrosion inhibitors. These can provide an extra layer of protection and extend the frame's lifespan.

If the frame is exposed to the outdoors, make sure the paint you're using is designed for it. Exterior paints are formulated to withstand UV rays, temperature changes, moisture, and other environmental factors, so they last a lot longer than standard paints.

What's the Best Way to Paint Aluminium Window and Door Frames?

Looking to achieve a polished and smoosh finish for your aluminium frame? Follow our step-by-step guide below!

Protect yourself

Aluminium primer and paint can contain toxic fumes, so make sure the area is well ventilated before you get started. If this isn't possible, you may need to wear a ventilation mask.

Wearing disposable gloves will also prevent any skin irritation in case paint or primer comes into contact with your hands.

Clean the door or window frame

It's best to have a clean canvas to work with, so your first step should be to clean the door or window frame with soap and warm water. Make sure it's fully dry before you start painting.

Apply a coat of primer

Applying primer to aluminium surfaces improves paint adhesion, boosts durability, and provides extra protection. When selecting a primer, it's important to choose one specifically formulated for use on metal surfaces.

To apply primer, you can use either a brush or sprayer. If using a brush, protect the glass by applying masking tape to prevent any paint flecks. If spraying, use both masking tape and paper to prevent spray from settling on the pane. You should also mask off the edges of the frame to prevent paint from getting on the walls.

Start at the top corner of the frame and work across, then downward, and finally along the bottom. Whether using a brush or a sprayer, apply the primer with up and down strokes to achieve even coverage.

Paint top coats

Once the primer has dried, use a fine grit sandpaper to gently sand away any small lumps or imperfections on the primed surface. This step will help create a smooth and even base for the top coat. After sanding, remember to vacuum or wipe away any dust or debris to maintain a clean working surface.

Now, it's time to apply the first coat of the top coat. Follow the same application technique used for the primer: start in one of the top corners of the window or door frame and work across, down, and then across again. Make sure to apply a thin, even coat rather than a thick one. This will help prevent runs and improve the finish. If using a brush, dab the paint into difficult-to-reach areas and then smooth it out with the brush.

Leave the first coat to dry as instructed by the paint manufacturer. Once it has dried, lightly rub down the surface to create a smooth texture, and then clean the surface to remove any dust or residue. Proceed to apply the second coat following the same technique as before. If a third coat is necessary to achieve the desired coverage or finish, apply it in the same way.

Skip the Hassle With a Pre-Painted Aluminium Window or Door From Alimax

Painting aluminium frames can be a complex task, especially if you want to achieve a professional-level finish. If you're not confident in your painting skills, you may find it easier to hire a professional painter experienced in working with aluminium frames.

Rather skip the process altogether? We've got you covered.

Our aluminium doors and windows come powder coated in a huge range of classic colours, from dark red and anthracite grey to off-white and golden beach. They're the perfect solution if you've been thinking about swapping out your old frames for a newer, more modern alternative.

Let us give the front of your home a stunning new entrance. Get a quote online or call us on 01425 205465 to get started!