Comparing UPVC vs Aluminium Windows: Pros and Cons


When it comes to choosing new windows for your home, the material you select can significantly impact the performance, aesthetics, and overall value of your property. In Australia, UPVC and aluminium are two popular choices, each offering unique benefits and drawbacks. This article will compare UPVC and aluminium windows, helping you make an informed decision that best suits your needs.

UPVC Windows

1. Durability

UPVC (unplasticised polyvinyl chloride) windows are known for their durability and longevity. They are resistant to rot, corrosion, and rust, making them an excellent choice for homes in coastal areas or regions with high humidity. UPVC windows can last for decades with minimal maintenance.

2. Energy Efficiency

One of the standout features of UPVC windows is their superior thermal insulation. UPVC frames have low thermal conductivity, meaning they help keep your home warm in winter and cool in summer. This energy efficiency can lead to significant savings on heating and cooling costs.

3. Maintenance

UPVC windows are very low-maintenance. They do not require painting or sealing, and regular cleaning with soapy water is usually sufficient to keep them looking new. This makes them a convenient option for busy homeowners.

4. Cost

Generally, UPVC windows are more affordable than aluminium windows. They offer excellent value for money, especially considering their durability and energy efficiency. For budget-conscious homeowners, UPVC windows can be an attractive option.

5. Aesthetic Appeal

While UPVC windows are available in a range of colours and finishes, they are often considered less aesthetically versatile than aluminium windows. Some homeowners prefer the modern, sleek look of aluminium, though advances in UPVC technology have introduced more stylish designs.

6. Environmental Impact

UPVC is a plastic material, and its production and disposal have environmental implications. However, many manufacturers now offer recyclable UPVC windows, which can help mitigate some of the environmental concerns associated with plastic products.

Aluminium Windows

1. Strength and Durability

Aluminium windows are renowned for their strength and durability. They are resistant to weathering and do not warp, crack, or swell with changes in temperature or humidity. This makes them particularly suitable for homes in areas with extreme weather conditions.

2. Design Flexibility

One of the significant advantages of aluminium windows is their design flexibility. Aluminium can be easily moulded into various shapes and sizes, allowing for sleek, thin frames that maximise the glass area. This can enhance the aesthetic appeal of your home and provide more natural light.

3. Energy Efficiency

Aluminium windows have traditionally been less energy-efficient than UPVC windows due to their higher thermal conductivity. However, modern aluminium windows with thermal breaks or advanced insulation technologies can offer improved energy efficiency, though they may still not match the performance of UPVC windows in this regard.

4. Maintenance

Aluminium windows require slightly more maintenance than UPVC windows, particularly in coastal areas where salt can cause corrosion. However, they do not need painting and can be easily cleaned with a damp cloth. Anodised or powder-coated aluminium windows are especially resistant to corrosion and wear.

5. Cost

Aluminium windows are generally more expensive than UPVC windows. The higher cost can be attributed to the material’s strength, design flexibility, and longer lifespan. While the initial investment is higher, the longevity and aesthetic benefits of aluminium windows can justify the cost for many homeowners.

6. Environmental Impact

Aluminium is a sustainable material that can be recycled multiple times without losing its properties. This makes aluminium windows a more environmentally friendly option compared to UPVC, especially when considering the entire lifecycle of the product.

UPVC vs Aluminium: Which Is Right for You?

When deciding between UPVC and aluminium windows, consider the following factors:

1. Climate and Location

For homes in coastal areas or regions with high humidity, UPVC windows may be more suitable due to their resistance to corrosion. In areas with extreme weather conditions, the strength and durability of aluminium windows might be more beneficial.

2. Budget

If budget is a primary concern, UPVC windows offer excellent value for money with their lower initial cost and high energy efficiency. However, if you can afford a higher upfront investment, aluminium windows provide long-term benefits and enhanced aesthetic appeal.

3. Aesthetic Preferences

Consider your aesthetic preferences and the style of your home. If you prefer a modern, sleek look with thin frames and larger glass areas, aluminium windows might be the better choice. For a more traditional look, or if colour and finish options are important, UPVC windows can provide a wide range of choices.

4. Energy Efficiency

If energy efficiency is a top priority, UPVC windows generally offer better thermal insulation. However, modern aluminium windows with thermal breaks can also provide good energy efficiency, though they may come at a higher cost.

5. Environmental Concerns

For environmentally conscious homeowners, aluminium windows are the more sustainable option due to their recyclability and lower environmental impact over their lifecycle. However, choosing recyclable UPVC windows can also help reduce the environmental footprint.


Both UPVC and aluminium windows have their unique advantages and drawbacks. The best choice for your home will depend on your specific needs, budget, and preferences. By considering the factors outlined in this article, you can make an informed decision that will enhance the comfort, efficiency, and aesthetic appeal of your home. Whether you opt for UPVC or aluminium, investing in high-quality windows is a smart choice that will pay off in the long run.