If you are wondering how much aluminium windows cost, the honest answer is that they sit above uPVC but give you slimmer frames and a sharper, more contemporary look. As a rough guide in 2026, expect to pay somewhere around 700 to 1,400 pounds per window supplied and fitted, with larger or more complex units running higher. Below we break down the numbers and, more usefully, explain where the extra spend is worth it and where it is not.
What you are actually paying for
Aluminium is a stronger metal than uPVC, so the frames can be much thinner while still holding large panes of glass. That is the whole appeal. More glass, less frame, and a crisp finish that suits both modern extensions and period homes done tastefully.
The price reflects a few things: - The material itself, which costs more than plastic to make and powder coat. - The thermal break, a plastic barrier inside the frame that stops the cold metal transferring inside. Good aluminium windows have a decent one, and it matters for warmth. - The finish, with powder coating available in almost any RAL colour, dual colours inside and out, and matt or textured options. - The glass, where double or triple glazing, argon fill and low emissivity coatings all add cost.
Aluminium window prices in 2026
These are realistic UK ranges for supplied and fitted aluminium windows. They are a starting point only, because the real figure depends on size, style, glazing and access.
- Small fixed or single casement window: roughly 500 to 850 pounds.
- Standard casement window: roughly 700 to 1,200 pounds.
- Larger or feature window: roughly 1,200 to 2,000 pounds and up.
- A full house of aluminium windows: frequently 8,000 to 18,000 pounds depending on the number and size.
Colour choice, triple glazing and awkward upstairs access can all push these up. The only way to get a figure you can rely on is a proper survey, so treat the above as ballpark and request a quote for your own home.
Aluminium versus uPVC on price
This is the comparison most people want. As a rule of thumb, aluminium windows cost somewhere around 20 to 50 percent more than the equivalent uPVC ones. On a like for like casement, that might be a few hundred pounds a window.
uPVC is the value choice and, in good quality, performs very well on warmth and security. If your budget is tight or the windows are out of sight at the back of the house, uPVC windows are a sensible, warm and durable option that many York homes are perfectly happy with.
So why pay the aluminium premium at all?
Where the slim-frame premium is worth paying
Aluminium earns its keep when the look really matters and when the glass is doing a lot of work:
- Big picture windows and glazing to a garden view. Slim frames mean more glass and less interruption, which uPVC simply cannot match at large sizes.
- Contemporary extensions and open plan rooms, where the clean lines and matt anthracite or black finishes suit the architecture.
- Front elevations you care about, where the sharper sightlines lift the whole look of the house.
- Very large openings, where aluminium's strength lets you go bigger without chunky frames or extra mullions.
For heritage and period properties there is a specialist route too. Our heritage aluminium windows and doors recreate the slim steel look of older casements while giving you modern warmth and security, which is popular on conservation area homes around York.
Where it is not worth it
Be honest with yourself. On a modest rear window that nobody sees, or where the budget is better spent elsewhere, the aluminium premium may not be money well spent. A good uPVC window in a sensible colour will keep you just as warm. Spend the extra where it shows and where the glass is large, and save it where it does not.
What affects the final quote
Two homes rarely pay the same, because the variables are real: - Size and number of windows. - Colour and dual colour finishes, with anything beyond standard adding cost. - Glazing spec, double versus triple, and any acoustic or self cleaning glass. - Access, since upstairs or awkward openings take longer and may need scaffolding. - The state of the existing openings, as any making good adds time.
If a firm gives you a firm price over the phone without seeing the job, be wary. Good pricing follows a survey.
A quick word on regulations
Replacement windows in England must meet current Building Regulations for energy efficiency, and the work usually needs to be registered, commonly through a scheme like FENSA, or signed off by building control. Rules do change and conservation areas have their own requirements, so check the current position with your local authority before you order. A reputable installer will handle the certification for you.
FAQs
How much do aluminium windows cost on average in 2026?
As a rough 2026 guide, supplied and fitted aluminium windows tend to run from around 500 pounds for a small unit to 1,400 pounds or more for a standard casement, with large feature windows higher again. A full house often lands between 8,000 and 18,000 pounds. Get a survey for an accurate figure.
Are aluminium windows more expensive than uPVC?
Yes, usually by around 20 to 50 percent. You pay more for the stronger frames, the slimmer sightlines and the powder coated finish. uPVC remains the better value option where the look is less critical.
Why are aluminium windows worth the extra money?
The main reason is slim frames and more glass, which suit large windows, contemporary extensions and front elevations where looks matter. On big openings aluminium's strength also lets you avoid chunky frames and extra bars.
Do aluminium windows last longer than uPVC?
Both last a long time when well made and fitted. Aluminium is very durable and holds its finish well, and quality uPVC also has a long life. Warranty length varies by product, so ask what is covered.
What makes one aluminium window quote higher than another?
Size, colour, glazing spec and access are the big ones, along with the quality of the system and the thermal break. A dual colour finish, triple glazing or scaffolding for upstairs work all add cost.
Want to see the finishes and slim frame styles in the flesh? Download our latest brochure, or request a free quote and we will pop out to measure up.