When it comes to choosing between aluminium and uPVC windows for your KwaZulu-Natal property, there are several factors to consider. Both materials have their advantages and disadvantages, but ultimately the decision will depend on your personal preferences and specific needs.

Weather resistance

KwaZulu-Natal is known for its harsh climate, ranging from hot and dry to cold and wet, depending on the region. Both aluminium and uPVC windows offer excellent weather resistance, but they have different properties.

Aluminium is naturally corrosion-resistant and does not rust, making it an ideal choice for coastal areas where the air is salty and humid. It is also a good choice for areas with high winds and heavy rainfall, as it can withstand these conditions without warping or cracking.

uPVC is a plastic material that is highly resistant to moisture and can withstand extreme temperatures. It doesn’t corrode or rot, making it a better choice for areas that experience frequent rainfall or high humidity.


Home security is a significant concern for homeowners in South Africa, and windows are often a vulnerable point of entry for burglars. Aluminium windows are generally considered stronger and more durable than uPVC windows, making them a better choice for security. They can be fitted with high-quality locks and reinforced glass to make them even more secure. uPVC windows, on the other hand, are lightweight and may be easier to break into than aluminium windows.

Energy efficiency

Energy efficiency is becoming increasingly important in South Africa, as homeowners seek to reduce their energy bills and environmental impact. The type and thickness of glass used in windows can significantly affect energy efficiency, but the window frame also plays a role. Both aluminium and uPVC windows can offer good energy efficiency, but uPVC windows have a higher insulation value than their aluminium counterparts. However, there is a workaround to solve this issue. Aluminium can be fitted with thermal breaks to improve its energy efficiency. This process involves inserting a non-conductive material between the inside and outside of the window frame. The result prevents heat from escaping.

So, which is better: aluminium or uPVC windows? It really depends on your priorities. There’s no magic bullet when choosing between aluminium and uPVC windows. Both have advantages and disadvantages, and the choice between them will ultimately depend on your preferences and specific needs. If you live in a coastal area or an area with high winds and heavy rain, aluminium windows are a better choice. If security is your primary concern, aluminium windows are generally considered more robust and long-lasting. Ultimately, the decision will depend on your specific needs and budget.

If you’re looking for high-quality aluminium windows for your property development in KwaZulu-Natal, look no further than ParaGone. Our team has years of experience in the industry and can help you choose the perfect windows for your specific needs. We offer a range of customisable options to ensure that your windows fit seamlessly into your building’s design aesthetic. Contact us today to schedule a consultation and take the first step towards improving your KZN estate.

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