Aluminium windows cost between £989 and £3,585 per standard design window in 2026, supplied and fitted, including VAT. A small bathroom window sits at the bottom of that range and a large sitting room window at the top. Across a whole three-bedroom house, expect £16,000 to £22,000.
These are real figures based on prices obtained from installers around the UK. Most homeowners want one thing from a page such as this; aluminium window prices in 2026 that are as accurate as can be. However, many other websites deliberately provide lower prices as an incentive to make an enquiry. Our current prices cover the six popular brands of aluminium windows. These are windows designed and specified to meet current Building Regulations. You’ll also get an explanation of why the quotations you may get might be unlike a lot of online figures and what to check before you sign anything.
I have been in the door and window industry since 1989. The Door and Window Experts Website does not sell windows and we are not paid to recommend. If you have quotations already and need to make sure that:
- The quotations are like for like
- You need to understand the differences in the brands
- A general sense check on what you are being quoted for
- You’d like our help with a local installer that we know and recommend
Then get in touch and I will personally respond to you and answer your questions.
Aluminium Window Prices in 2026 At A Glance
Aluminium window prices are affected by the sizes, design, colour, glass type, brand name and even your property type and location. Here are some up-to-date window costs for some of the well-known aluminium window brands.
| Window design | Origin OW-70 | Smart Alitherm 400 | AluK 58BW | Sheerline Classic | Cortizo Casement | Schüco AWS 80 SC |
|---|---|---|---|---|---|---|
| Sitting room | £3585.00 | £3153.00 | £3312.00 | £3289.00 | £3240.00 | £3380.00 |
| Kitchen | £2250.00 | £1956.00 | £2052.00 | £1966.00 | £2124.00 | £2256.00 |
| Bedroom | £3024.00 | £2628.00 | £2748.00 | £2930.00 | £2820.00 | £2988.00 |
| Bathroom | £1340.00 | £1050.00 | £1144.00 | £989.00 | £1150.00 | £1300.00 |
Why our prices look higher than the figures you have seen elsewhere
You might have seen online, aluminium windows quoted at around £475, or a range of £350 to £600. These low figures appear on several home improvement website, and it is worth explaining what these prices describe.
These are mostly a supply-only price for a small window. No installation. No VAT. No cills, no trickle ventilators, no removal of your old windows, no making good and no certification. It also has no brand attached to it, which on a bespoke product is like pricing a car without mentioning the make and model.
That figure is not dishonest. It is answering a different question from the one you are asking. Every price on this page is for a finished job: a named system, a stated size, made to order, fitted by a professional installer, VAT included, and certificated through FENSA or CERTASS. It is the number that will appear at the bottom of your quotation.
If you want a sense check on that, Everest currently publish £1,120 to £4,500 per window including installation. A national retailer with its own survey teams and showrooms arrives at broadly the figures you see above, because it is pricing the same thing I am.
How much do aluminium windows cost on a typical three bedroom house?
A typical three-bedroom semi-detached house with nine windows replaced in aluminium will usually cost between £16,000 and £22,000, including VAT and fitting.
The price differences usually come down to brand. Smart Systems and Cortizo sit at the lower end, Origin and Schüco at the upper, with AluK and Sheerline in between. Location matters too, with London and the South East running ahead of the rest of the country.
That figure assumes a mix most typical semis actually have; two large windows to the main reception rooms, two full-size bedroom windows, three smaller windows serving a third bedroom, dining room or utility, and two small windows to the bathroom and landing.
Grey is now a very popular colour and is available in several shades. These prices reflect that. You will find matt white and black priced almost identically, because manufacturers stock all three and powder coaters run them in volume.
If your quotation falls outside this range in either direction, that is worth understanding rather than worrying about. A higher figure usually means a premium brand, a difficult access situation, upgraded glass or non-standard colours. A significantly lower one usually means something has been left out. Send it to us and we will tell you which. Price also depends on who you buy from. A company with a showroom and several fitting teams carries overheads that an equally capable smaller installer does not, and that difference shows up in the quotation.
What these prices include
The prices in this article are for individual windows, but costed as part of a whole-house order. Buying one or two windows on their own will cost more per window, because aluminium is optimised across the whole order and many companies apply a minimum project value. The advice is always to get up to date prices based on your house. Get in touch and I’ll suggest the right aluminium windows from excellent suppliers near you.
These 2026 prices are based on supply and installation replacing old windows, including VAT, and are for anthracite grey windows with high performance double-glazed units and trickle ventilators as required to meet current Building Regulations. Cills and standard hardware are also included. Of course these window prices are also covered by FENSA or CERTASS certification.
What these prices do not include
Our aluminium window prices, obtained from a variety of nationwide installers, selling these brands, do not include scaffolding or specialist access equipment. Also not allowed for are plastering, rendering or external making good beyond normal finishing, new lintels or altered openings, special colours, triple glazing or specialist glass.
Overall it is very hard to find Recommended Retail Prices for aluminium windows and doors due to the more bespoke nature of this material compared to PVCu. If you have received a quotation and it does not accurately explain what is covered and what is not, then we recommend you go back to the company. This is also the likely reason why two quotations for what look like identical windows may be two more thousand pounds apart.
Some typical window styles, and sizes we price
Aluminium windows are made to order, so a price only means something when it is tied to a design. These four cover most of what a typical British house may have in it.
Aluminium Sitting Room Window Prices
A typical sitting room window size and design, with main and smaller opening windows.
- Origin OW-70 £3585.00
- Smart Systems Alitherm 400 £3153.00
- Aluk 58BW £3312.00
- Sheerline Classic £3289.00
- Cortizo Casement Window £3240.00
- Schüco AWS 80 SC £3380.00
Aluminium Kitchen Window prices
A popular style for a kitchen window with full height side opener and smaller top opening fanlight.
- Origin OW-70 £2250.00
- Smart Systems Alitherm 400 £1956.00
- Aluk 58BW £2052.00
- Sheerline Classic £1966.00
- Cortizo Casement Window £2124.00
- Schüco AWS 80 SC £2256.00
Aluminium Bedroom Window Prices
A bedroom window design with two main openers, a central fixed pane and fire-escape hinges.
- Origin OW-70 £3024.00
- Smart Systems Alitherm 400 £2628.00
- Aluk 58BW £2748.00
- Sheerline Classic £2930.00
- Cortizo Casement Window £2820.00
- Schüco AWS 80 SC £2988.00
Aluminium Bathroom Window Prices
A typical bathroom window with a fanlight opener over a fixed pane and obscure glass.
- Origin OW-70 £1340.00
- Smart Systems Alitherm 400 £1050.00
- Aluk 58BW £1144.00
- Sheerline Classic £989.00
- Cortizo Casement Window £1150.00
- Schüco AWS 80 SC £1300.00
Aluminium window prices by style
The four designs above are priced by room, because that is how most houses are laid out. But the style of window you choose changes the price as much as the size does. Here is roughly where each sits, based on the same specification and a comparable size.
| Window style | Notes |
|---|---|
| Casement | The standard against which everything else is priced |
| Flush casement | Sash sits within the frame. Around 8% more than a standard casement |
| Tilt and turn | Windows offering multifunctional opening and larger sizes |
| Sliding sash | Harder to source, typically 15% more than a casement window |
| Steel look | Different profiles, hand-cut, applied glazing bars add 15-20% or more |
| Fixed light | No opener, no hardware. The cheapest way to buy glass |
| Bay window | Structural bay poles and corner posts add cost |
Fixed lights are worth thinking about carefully. Most homeowners specify more openers than they will ever use, and each one adds profile, hardware and labour. If you have a run of windows and only need ventilation from one or two, that is where the real savings are. This is also why a quotation with fewer opening sashes can be cheaper without being any worse.
Casement windows are what most British houses have and what the prices further up this page describe. Everything else is priced against them
Flush casement windows have the opening sash within the frame so the outside face is level. It is the fastest-growing style in the market and it costs more because the tolerances are tighter and there is more profile in the frame.
Tilt and turn windows carry more hardware than any other design, and these windows come at near door sizes.
Sliding sash windows are the most expensive way to buy an aluminium window of a given size. Two moving sashes, a balance system and a great deal more material than a casement. There are very few aluminium options for these in the market.
Steel look and Crittall style windows have steel-styled stepped or putty-line frames, with applied aluminium glazing bars that are cut and hand-fitted. On a window with multiple bars, this work adds more to the price.
Fixed lights or picture windows usually cost less than opening windows. If you have several windows in a room and you only need ventilation from one or two of them, this is where the savings are. It is also the reason a quotation with fewer openers can be substantially cheaper without being worse.
Lifespan of Aluminium Windows
You will see 30 to 50 years quoted for aluminium windows, and the aluminium itself will comfortably outlast that. It is not the frame that fails. The powder-coated finish, the sealed glass units and the hardware are what eventually need attention, usually in that order and usually long before the window does.
A sealed unit that has misted is a straightforward replacement. Hardware is replaceable on any reputable system, provided the system is still supported, which is one of several reasons to buy a brand that will still exist in twenty years.
Aluminium or uPVC?
Expect to pay roughly 30-50% more for aluminium than a comparable uPVC window. What you get for the difference is a slimmer sightline, more glass in the same opening, greater strength, larger window sizes and a longer service life.
What you do not get is a better window in every situation. On a modest budget across a whole house, good uPVC fitted properly will serve you better than cheap aluminium fitted badly.
Online window websites – how reliable are they?
To explain how these 2026 window prices are worked out, it helps to understand the UK window market a little. There are over 10000 window companies in the UK today, but the vast majority are installers, and a very small number actually make windows and doors.
With aluminium windows, you’ll find window companies that are genuine aluminium experts, and these are the preferred choices when getting aluminium windows prices. Other window businesses are predominantly PVCu or timber windows suppliers, offering aluminium as an optional product rather than a core product. You’ll pay more from the suppliers that aren’t entirely focused on selling aluminium windows.
When looking at online window prices, four types of websites provide information about aluminium window prices online.
- The reputable window business selling online.
- The popular home improvement websites with no connection to windows and doors.
- The lead generation websites designed for clicks.
- Genuine information websites.
Eight factors affecting aluminium window prices.
1. The window brand you choose affects prices.
Just like other goods, aluminium windows come in various brands and systems. Some of these brands are at the lower end of the price scale, with lower material and manufacturing costs. Other brands serve the premium and architectural glazing market and are more expensive. Therefore you’ll find price differences for the same window design from different brands.
Smart Systems, Aluk, and Sheerline are usually cheaper than upper-tier brands like Origin, Schüco and Reynaers. The manufacturers and installers of the more expensive brands also tend to charge more for the overall service.
2. Aluminium windows prices depend on the supplier.
Like any other commercial environment, business factors also affect your price. Profit margins, material costs, buying power, discounts and routine price increases. These are just some of the factors also affecting the prices charged to you.
Larger businesses with showrooms, more fitting teams and vans have larger overheads than equally good smaller businesses without the overheads. Aluminium window prices will differ depending on the supplier you get prices from. Some window installers prefer to fit only into new build openings and will charge you more for replacement window work.
3. The design of your aluminium windows
The more material in your windows design, the higher the overall price. A window with fewer modules will always cost less than one with several opening elements. Less material in your windows will bring the overall price down.
An excellent example is the latest trend for steel-inspired and Crittall® style windows. These desirable and distinctive windows comprise hand-cut and applied glazing bars giving the look of period metal windows. The work involved in making and fitting these is greater than standard windows.
4. The colour you choose affects aluminium windows prices
With over 150 colours and colouring combinations inside and out, the colour you choose will affect your price. Aluminium window prices for colours other than white have decreased substantially because more suppliers stock the popular colours. So it is entirely likely the price of a white, grey and black window may be the same.
Expect to pay more if you desire a special colour, such as a metallic or unique shade.
5. Personalising your windows alters the price you pay.
The mostly bespoke nature of aluminium windows means you can choose how you customise them. You may prefer higher-specification glass for comfort or triple glazing. A contrasting colour handle may look better than a matching one. You may need integrated blinds or child-safe hardware. First-floor windows will need fire-escape hinges. How you personalise your windows will always affect the price.
6. Your house type affects aluminium window prices.
When pricing the windows for your project, a professional window company will always consider access, location, health and safety.
A terraced property with no access to the garden probably involves passing windows through the house compared to a semi-detached or detached home with one or more ways to access the back. City centre properties with limited on-street parking make deliveries harder and more expensive.
First-floor and attic conversion windows may need specialist lifting equipment or scaffolding, whereas the ground floor needs none. Even the design and consequent weight of your windows may mean more installers on-site to lift them into the opening or specialist equipment to move them safely. Window prices differ for new openings and existing ones. Aluminium window prices always vary depending on where and how they are fitted.
7. The larger your project, the cheaper the windows.
The size of your project and the number of windows will also affect your aluminium window prices. Aluminium window manufacturers are experts at optimising aluminium bars, and the larger the project, the better optimised the materials and the lower the prices.
For example, buying just one or two windows will always be more expensive per window than a complete house full of windows of the same size and design. Be aware that many window companies charge a minimum price for a project with just one small window.
8. Window prices vary by location.
The reality is that aluminium window prices vary by location, with London and the South of England being more expensive than other regions. For this reason, online window prices would be especially inaccurate. The advice is always to obtain several quotations and compare prices on a like-for-like basis.
Why online aluminium windows prices should be ignored
It is natural to want an idea of how much aluminium windows will likely cost for your project. You’ll invariably come across several websites online giving you ‘typical’ aluminium windows prices, and there are several good reasons to regard their online prices with scepticism.
We think many of these websites are deliberately quoting lower prices because:
- The website and companies receiving leads are set up to earn money.
- They bet on people having had higher accurate quotations and want cheaper prices.
- They’re set up to mainly capture internet traffic.
It is the same for per square metre prices quoted. Some websites quote around £500 per square metre for an aluminium window. Nobody in the trade quotes on this basis, and our own figures show why. The per square metre price ranges from under £1,000 for a large bedroom window to over £2,000 for a small bathroom one. Small windows cost far more per square metre than large ones, which is why the measure tells you nothing useful, and why £500 is not so much wrong as meaningless.
The online prices quoted are far too vague to be meaningful, making little mention of the required specifications today’s windows need. Trickle vents are essential in meeting current Building Regulations and can add £100 or more to the cost of a small window.
The brand of window is never mentioned on these websites and all aluminium window brands vary in price by quality, brand or specifications. There are few ‘standard’ aluminium windows, as these websites would imply.
There are also hidden costs in aluminium windows, that come about as a result of where the window is being fitted, and other factors specific to your property. Another reason why getting a professional quotation avoids hidden costs.
How to get correct aluminium window prices.
It is very easy to get quick, accurate prices and a better overall experience. The safest way is to get a proper quotation from a reputable local business.
- You get to see the products you are buying in a showroom
- The product quality and guarantees are better.
- You avoid the high-pressure selling.
- There is a visible person and business dealing with you.
- You avoid your details being passed to other people.
Or you can get in touch with us for details of the right aluminium windows from the proper suppliers.
Consider getting your builder to fit. You trust your builder that your walls and roof won’t fall down. So why not explore buying your windows direct? This is not without its risks and pitfalls, as we explain in this article.
