Aluminium windows are a fantastic choice, especially if your priorities are natural light intake, durability and a modern look.
So, if you’ve been searching ‘aluminium windows pros and cons’ lately, you’ll likely have seen that the positives far outweigh the negatives.
But does that mean they are the right fit for you, or would the UK’s favourite, uPVC, be a better pick?
Truth be told, they’re both good options. Aluminium is typically better for a clean, contemporary look, it lasts longer, feels premium, and because its strength allows for slimmer frames, you get more natural light inside your home. Its thermal performance is good too, perhaps not at the level of uPVC, but you’d hardly notice.
We’ll explore the material in more depth below, and outline your available options.
Introducing aluminium as a window frame material
Aluminium has a fascinating history. Originally used in aerospace and architecture, it was long considered too thermally inefficient for residential homes, raw aluminium conducts heat relatively freely, meaning warmth would escape straight through the frame.
Everything changed with the introduction of thermal breaks, insulating material built into the aluminium profile that interrupts heat transfer through the frame. This single innovation made aluminium a genuinely competitive window material, and it’s now the fastest-growing product we offer. We’ve recently installed aluminium windows in Crawley, Worthing, Guildford and more rural locations like Ardingly, and demand shows no signs of slowing.
Aluminium’s real strength lies in its structural robustness. Stronger frames mean slimmer profiles, which means larger glass panes and more natural light in your home. The result is a space that feels brighter, more open and thoroughly modern. Being in a space full of natural light is also scientifically proven to benefit you in a few ways.
You’re promised a better mood, increased productivity, a higher quality of sleep, and lower energy bills through reduced dependency on appliances.
Aluminium windows pros and cons
The pros
Slim frames and better light
Aluminium’s strength allows for thinner frames and larger glazings, flooding your rooms with natural light in a way that chunkier frames simply can’t match.
Exceptional durability
Aluminium windows can last up to 40 years. They won’t change shape, warp or erode like older windows would, even through Surrey’s damp winters and heavy rain.
Low maintenance
As much as you may love DIY, these windows won’t take up your precious weekends. Regular cleaning with soapy water is all it takes. For busy households, that ease of maintenance is a genuine advantage.
Competitive thermal performance
Our aluminium windows feature thermal breaks and double or triple glazing, achieving U-values of 1.2-1.4 W/m²K. What does this figure mean? Less heat transfer. In the winter, vital warmth won’t escape through your windows. In scorching summers like this one (it’s currently 33 degrees as we write this), you windows will block unwelcome heat from entering into your room.
Custom designs and a range of colours
Choose any shade from the full RAL colour chart, from classic white to bold contemporary finishes. The design freedom aluminium offers is hard to match.
Recyclability
Around 75% of all aluminium ever produced is still in use today (International Aluminium). If sustainability matters to your household, that’s worth knowing.
The cons
Higher upfront cost
Aluminium windows are more expensive than uPVC windows initially. The long lifespan and minimal upkeep costs offset this over time, but it’s an important consideration if budget is tight.
Thermal performance isn’t best in class
Modern aluminium windows perform well thermally, but they don’t quite reach the very highest insulation levels of some uPVC alternatives. Worth discussing if your home is particularly draughty.
No woodgrain finishes
If the warmth and character of timber windows appeals to you, aluminium won’t replicate that look. Wooden windows remain the better choice where a natural aesthetic is the priority.
Choose aluminium windows if…
- Natural light is a priority for your home
- You want a clean, modern look
- Low maintenance matters to you
- You’re investing in your home for the long term
- You want maximum flexibility over colours and custom designs
- Your property is exposed to harsh weather conditions
What aluminium window styles can I choose?
We offer aluminium windows in two core styles at BSF Windows.
Casement windows
The most popular type of window in the UK, they open in or out with a simple handle. Clean, simple and versatile, casement windows suit most Surrey properties and offer excellent ventilation, strong weather sealing and generous natural light.
Best for: Living rooms, bedrooms and front-facing elevations.
Tilt and turn windows
A tilt and turn window opens inward at the top for gentle ventilation or swings fully open like a door. The inward opening makes cleaning straightforward, even on upper floors, and sound insulation when closed is excellent.
Best for: Upper-floor rooms, those with young children who worry about high falls, apartments and homeowners who want practical, controllable ventilation.
Aluminium windows from BSF Windows
Our aluminium range is built using premium profiles, and every window is engineered to meet the latest energy standards. Here’s what’s included as standard:
- U-values of 1.2-1.4 W/m²K with double or triple glazing
- Full RAL colour range including white, grey, cream, red, blue and dark blue
- Decorative glazing options include: Charcoal, Chantilly, Pelerine, Oak, Minster, Mayflower and Absolutely
- Advanced multipoint locking for security and peace of mind
- Casement and tilt and turn styles available
Who are BSF Windows?
We’re a family-run window and door company based in Horley, Surrey, with over 20 years of experience and thousands of successful installations. We serve homeowners across Crawley, Guildford, Dorking, Epsom, Weybridge, Brighton, Worthing, Burgess Hill, Tunbridge Wells and the surrounding areas.
Our process is simple: we visit you, take precise measurements, provide a transparent quote and install your windows to the highest standard, with energy efficiency prioritised, with no shortcuts.
You’re more than welcome to visit our showroom at 31-33 Station Road, Horley, Surrey, RH6 9HW to see our range in person.
Here are some useful links and contact details should you have any questions (we’re more than happy to advise) or if you’d like a quote!
Get a quote for new windows, doors or a conservatory here
Call us: 01293 408 713
Email: bsfwindows@gmail.com
Thank you for reading.
