If you’re upgrading your home’s aluminium doors and windows in Cape Town, it helps to understand the real cost and design options before you commit. Aluminium has become the go-to material for modern Cape Town homes because it’s strong, lightweight, resistant to coastal corrosion, and can be shaped into striking custom designs. Here’s a practical guide to help you plan your project.
Why Choose Aluminium for Doors and Windows?
Aluminium doors and windows are popular across Cape Town for good reason:
- Corrosion resistance — aluminium naturally resists rust, which matters in a coastal, salty climate.
- Strength-to-weight ratio — strong enough for large glass panels, light enough for smooth operation.
- Design flexibility — aluminium frames can be custom cut into decorative patterns, unlike standard steel or timber options.
- Low maintenance — no repainting or sealing required like timber frames.
Aluminium Doors vs Windows: What’s the Difference in Cost and Complexity?
Aluminium windows are generally simpler and cheaper to fabricate than doors, since doors need to handle hinges, locks, weight-bearing hardware, and daily opening and closing. Custom-designed doors — like decorative sunburst or geometric panel doors — cost more than standard flat-panel designs because of the additional cutting, welding, and glass-fitting work involved.
As a rough guide for 2026 Cape Town pricing:
- Standard aluminium window: priced per square metre based on size and glazing type.
- Standard aluminium door: higher than an equivalent window due to hardware and reinforcement.
- Custom-pattern security or feature door: priced individually — design complexity, glass inserts, and finish all affect the final cost.
Because pricing depends heavily on size, design, and glazing choice, the most reliable way to budget is to request a free quote with your specific measurements and design preference.
Popular Aluminium Door Designs in Cape Town
Beyond plain flat-panel doors, many Cape Town homeowners are choosing custom geometric and sunburst-style panel designs — combining solid aluminium slats with frosted or clear glass inserts for a striking entrance feature. These designs work well as both security doors and front doors, giving a home a distinctive look without sacrificing strength.
Installation: What to Expect
A proper aluminium door or window installation involves accurate measuring, a level and square frame fit, weatherproofing around the opening, and testing that the door or window opens and locks smoothly. Poor installation is one of the most common causes of draughts, water ingress, and hardware failure down the line — which is why professional fitting matters as much as the quality of the aluminium itself.
Why Choose Supar Steel for Aluminium Doors & Windows
Supar Steel designs, manufactures, and installs custom aluminium doors and windows across Cape Town, combining strength, style, and long-lasting performance for both residential and commercial properties. Our full range of welding and fabrication services means your aluminium installation is backed by two decades of hands-on metalwork experience.
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Frequently Asked Questions
Are aluminium doors better than steel doors for coastal homes?
For pure corrosion resistance, aluminium generally outperforms untreated steel in coastal air, though properly coated and maintained steel can also last well. Aluminium requires less ongoing maintenance.
Can aluminium doors be custom designed?
Yes — aluminium frames can be cut and welded into custom geometric patterns, combined with clear or frosted glass, to create a unique look while keeping the door structurally sound.
How long does an aluminium door installation take?
Once the door is fabricated, installation itself is usually completed within a day, though fabrication of a custom design takes longer than a standard stock size.
Aluminium is one of the most widely used architectural metals worldwide — you can read more about its properties on Wikipedia’s aluminium overview.
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Supar Steel offers a full range of welding, steel and aluminium fabrication services across Cape Town. Explore related guides and services:
