When it comes to choosing new windows for your home, the decision between aluminium and uPVC (unplasticised polyvinyl chloride) is one of the most important you’ll make. Both materials have their unique strengths, and the choice depends on your priorities – whether it’s energy efficiency, durability, cost, or aesthetic appeal.
In this blog, we’ll explore the key differences between aluminium and uPVC windows, helping you make the right choice for your home.
Energy efficiency: Keeping your home comfortable
One of the main factors homeowners consider when selecting windows is thermal efficiency. After all, better insulation means lower energy bills.
- uPVC windows: Known for their excellent insulation properties, uPVC windows are a popular choice for improving energy efficiency. The material is a poor conductor of heat, which helps prevent heat transfer between the inside and outside of your home. This makes uPVC frames ideal for reducing heating costs during winter and keeping your home cool in summer. Double or triple glazing further enhances their performance, making them a highly energy-efficient window solution.
- Aluminium windows: Aluminium is naturally less insulating than uPVC because it conducts heat more readily. However, modern aluminium windows now incorporate thermal breaks – a barrier within the frame that reduces heat transfer. While this innovation has significantly improved their thermal efficiency, uPVC still edges out aluminium in this category when it comes to keeping energy bills low.
Verdict:
If energy efficiency is your top priority, uPVC windows are the better choice.
Durability and lifespan: Built to last
Durability is another key factor when investing in new windows. You want a material that can withstand harsh weather conditions and last for decades.
- uPVC windows: With a lifespan of 20–30 years, uPVC frames are resistant to rot, corrosion, and warping. They perform well in various climates but may fade or crack over time if exposed to extreme weather conditions.
- Aluminium windows: Aluminium frames are made from a highly durable material that can last 45 years or more with minimal maintenance. They are resistant to rust and do not warp or swell in changing weather conditions. This makes them an excellent choice for long-term reliability, especially in areas with harsh climates.
Verdict:
For longevity and strength, aluminium windows are the clear winner due to their longer lifespan and ability to withstand tougher conditions.
Maintenance: Keeping things simple
No homeowner wants high-maintenance window frames that require constant care.
- uPVC windows: These are low maintenance and easy to clean with just soap and water. They don’t need repainting or weatherproofing, making them a hassle-free option for busy homeowners.
- Aluminium windows: Aluminium frames also require minimal upkeep but may need occasional attention to screws or seals over time. Unlike timber windows, they don’t need repainting and resist corrosion exceptionally well.
Verdict:
Both materials are relatively low maintenance, but uPVC windows have a slight edge due to their simplicity.
Cost considerations: Budget vs long-term value
The upfront cost of installing new windows can vary significantly depending on the material you choose.
- uPVC windows: Typically more affordable than aluminium windows, uPVC products are an excellent option for homeowners on a budget. Their lower manufacturing costs make them a popular choice for those seeking cost-effective solutions without compromising on performance.
- Aluminium windows: Aluminium frames are generally more expensive due to higher manufacturing costs and their premium finish. However, they offer better long-term value thanks to their durability and longer lifespan. Over time, you may save money by avoiding frequent replacements or repairs.
Verdict:
If upfront cost is a concern, go for uPVC windows, but if you’re thinking long term, aluminium windows offer better value.
Aesthetics: Style meets functionality
The appearance of your window frames can dramatically impact your home’s overall look and feel.
- uPVC windows: Available in a wide range of styles and finishes – including woodgrain effects – uPVC frames suit both modern homes and period properties. However, they tend to have thicker frames compared to aluminium, which can slightly reduce natural light entering your home.
- Aluminium windows: With slimline aluminium frames, these windows allow for larger glass surfaces that maximise natural light. They’re available in an extensive range of RAL colours, offering more customisation options than uPVC. Aluminium casement windows are particularly popular in contemporary designs due to their sleek appearance.
Verdict:
For modern aesthetics and maximising natural light, aluminium windows take the lead. For versatility across styles and budgets, uPVC windows are a great choice.
Security levels: Peace of mind
Both materials offer excellent security features when combined with multi-point locking systems.
- uPVC windows: Strong and secure enough for most residential applications.
- Aluminium windows: Naturally stronger than uPVC due to the strength of aluminium itself. This makes them harder to break into and ideal for those prioritising security.
Verdict:
While both materials provide solid security levels, the added strength of aluminium gives it an edge for those seeking extra peace of mind.
uPVC vs aluminium windows: Which is better?
The decision between aluminium vs uPVC windows ultimately depends on your specific needs:
- Choose uPVC windows if you’re looking for an affordable option with excellent thermal efficiency.
- Opt for aluminium windows if you prioritise durability, modern aesthetics, and long-term value.
At Boston Trade Frames, we offer both high-quality uPVC window frames and modern aluminium window solutions tailored to your needs. Whether you’re upgrading sash windows in a period property or installing flush sash casement windows in a modern home, we’ve got you covered with British-manufactured products designed for performance and style.
Work with Boston Trade Frames today
Ready to transform your home with new windows? Contact Boston Trade Frames today for expert advice on choosing between aluminium vs uPVC windows. Explore our range of styles and colours to find the perfect fit for your property. Let us help you make the best choice for comfort, style, and long-term value.
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