uPVC windows offer superior energy efficiency, lower initial costs (30-50% cheaper), better noise reduction, and minimal maintenance compared to aluminium windows. While aluminium windows are slightly more durable (30-40 years vs 25-30 years) and suit modern aesthetics, uPVC provides better insulation, condensation resistance, and long-term value for Australian homes. Both materials offer excellent security features with multipoint locking systems.
If you are considering new windows, one of the first things you may ask is ‘What frame material is best?’. Two of the most popular options are aluminium and uPVC, both of which have their own strengths and weaknesses.
In this blog, we will discuss the pros and cons of both materials and suggest which one is superior.
Understanding the Materials
Both aluminium and uPVC have their unique benefits and drawbacks.
Aluminium windows are a popular choice. While they lend themselves to modern and contemporary properties, they are also aesthetically effective in homes of all eras, including cottages and period renovations.
They provide moderate insulating properties, and they are resistant to corrosion, warping and flexing. The material is very lightweight and functional, making it long-lasting and durable. One downside of aluminium is that it is not effective at decreasing noise pollution.
uPVC windows are seen as a reliable, cost-effective choice. They are known for their energy efficiency, durability and low maintenance needs. From an aesthetic point of view, they can be customised to fit a variety of architectural styles.
They also have great noise reduction properties, helping keep your home quiet and peaceful. There are also a variety of security benefits.
Energy Efficiency and Thermal Performance
Choosing windows with good insulating properties is crucial for Australians. Since we have bouts of extreme heat and cold and we are prone to storms, our windows need to withstand a lot. Good windows will keep warm air inside during winter and cool air in during summer, making your home more energy efficient.
This will lower your energy costs as your heater and air conditioning will be more effective. Thankfully, when it comes to thermal performance, both uPVC and aluminium perform well.
uPVC is a low-conductivity material which effectively insulates your home. uPVC windows are especially impactful due to their multi-chambered design, quality materials and tight seals.
This allows them to withstand the harshest of weather while reducing your energy bills. uPVC is also condensation resistant, ensuring your house will be free of mould and damp.
While less effective than uPVC, aluminium windows are also good when it comes to thermal performance. However, it is prone to condensation.
Durability and Maintenance Requirements
Both aluminium and uPVC windows boast good durability, although aluminium is generally best in this regard. However, both have different maintenance needs, with uPVC being generally more low maintenance.
As a material, aluminium presents a fantastic choice if you are looking for something long-lasting. Aluminium is very durable, lasting up to 30-40 years. This is because it is lightweight and versatile and it is resistant to corrosion, flexing and warping.
Aluminium windows require some maintenance to help them last effectively though. In particular, they require regular cleaning with specialised cleaning products to avoid corrosion and maintain appearance.
uPVC windows have outstanding durability, lasting up to 25-30 years. They are also very low maintenance, only requiring a simple wipe down with soapy water once in a while.
Aesthetics and Design Flexibility
If you are looking for good customisability, both aluminium and uPVC windows will cater to your needs.
Aluminium windows are aesthetically pleasing. They fit perfectly into modern contemporary builds, but they also suit older styles of property. They come in a wide variety of colours and styles, meaning you can find the perfect windows to suit your home.
uPVC windows are also available in a variety of designs, finishes and colours. This makes them highly customisable. They suit both those looking for a modern aesthetic and classic looks, making them very versatile.
Cost Comparison: Initial Investment vs. Long-Term Value
If you are looking for lower initial costs, uPVC windows win out. uPVC windows can be up to 30-50% less expensive.
However, as a trade-off, uPVC windows tend to be a little less durable than aluminium windows. Typically, they last 25 to 30 years, but high-quality uPVC may last up to 40 years with proper care.
In general, aluminium windows are more costly. This is because the material and installation fees are more expensive. They can last up to 30 to 40 years with proper care, but you will have to invest in the right cleaning products and use them regularly, so the running costs are higher than uPVC windows.
Security Features
Feeling safe is an important consideration when choosing additions to your home. Both uPVC and aluminium windows provide excellent security.
uPVC windows are robust against potential intruders. They boast multipoint locking mechanisms which engage several points across the frame, making it especially difficult to break into. The material of the frame itself is also strong and therefore hard to break to gain entry to your property. This gives you peace of mind that your windows cannot be broken into.
Aluminium windows also have very durable frames and many use multipoint locking systems. This makes the windows very difficult to break into.
Making the Right Choice for Your Australian Home
Ultimately, whether you choose aluminium or uPVC windows depends on your needs and preferences.
Aluminium frames have a slight edge over uPVC in terms of its durability. However, you will have to pay significantly more initially for this benefit.
When it comes to uPVC, it is the cheaper option, and it provides all the same benefits as aluminium. It also wins out over aluminium when it comes to its energy efficiency. Over the long term, this will lead to decreased energy bills and cost savings. uPVC also requires less maintenance, blocks noise pollution and resists condensation.
Looking for uPVC windows?
Here at Ultimate Windows, we believe uPVC offers the ultimate choice. We manufacture all of our windows in-house from the best quality uPVC. This means you can customise your windows to fit your needs and style. We have been manufacturing and installing windows for over 15 years, meaning you can be confident in our service and product. We are so confident in our windows, we offer a 12-year warranty.
If you’re considering new windows, why not contact us for a free quote? Contact us on our website or call your closest branch directly.
Frequently Asked Questions
Can uPVC windows be painted or changed in colour?
uPVC windows come in a variety of colours and finishes during manufacturing, but they cannot be painted after installation. The colour is integrated into the material itself, which means it won’t chip or fade like paint. If you want to change the colour later, you would need to replace the windows. Choose your preferred colour carefully during the initial selection.
Do uPVC windows yellow or discolour over time?
Modern high-quality uPVC windows are UV-stabilised and resistant to discolouration. Older or lower-quality uPVC products from decades ago were prone to yellowing, but today’s uPVC windows maintain their appearance for 25-30 years or more. Look for windows with built-in UV protection and quality guarantees from reputable manufacturers.
Are uPVC windows environmentally friendly?
uPVC windows have environmental benefits including excellent energy efficiency that reduces heating and cooling demands, long lifespan that minimises replacement needs, and recyclability at end of life. Modern uPVC manufacturing has also improved to reduce environmental impact. Their superior insulation properties help lower your home’s carbon footprint over time.
Can I install uPVC windows myself or do I need a professional?
Professional installation is strongly recommended for uPVC windows. Proper installation is critical for ensuring weatherproofing, thermal efficiency, security, and warranty validity. Poor installation can lead to drafts, water leaks, and reduced performance. Most manufacturers require professional installation to honour their warranties.
How do uPVC windows perform in extreme Australian weather conditions?
uPVC windows are well-suited to Australian climates. They withstand extreme heat without warping or expanding, resist UV damage, don’t corrode in coastal salt air, and maintain their insulating properties in both hot and cold temperatures. Their multi-chambered design and tight seals make them particularly effective during storms and temperature extremes, helping to regulate indoor temperatures year-round.
