If you’re considering replacing your windows or upgrading a property, one of the first questions you’ll probably ask is:
How much does a standard aluminium window cost?
The short answer is: most standard aluminium windows in the UK cost between £350 and £750+ per window, with many typical installations averaging around £475 per window, depending on size, glazing, style, and specification. Premium or bespoke units can cost significantly more.
But the real answer is more nuanced than that.
Aluminium window prices can vary significantly depending on the window size, opening style, frame system, glazing specification, colour finish, installation complexity, and whether you’re buying supply-only or supply-and-fit.
In this guide, we’ll break down exactly what affects aluminium window prices, what a “standard” aluminium window typically costs in the UK, and whether aluminium windows are worth the investment compared with alternatives like uPVC.
Average Cost of a Standard Aluminium Window in the UK
For a typical standard-sized aluminium casement window, homeowners commonly pay:
| Window Type | Approx. Supply Only | Approx. Supply & Installation |
|---|---|---|
| Small Aluminium Window | £300–£500 | £500–£800 |
| Standard Aluminium Window | £350–£750 | £600–£1,200 |
| Large / Feature Window | £750–£1,500+ | £1,200–£2,500+ |
These figures vary widely by supplier and specification, but they reflect common UK market ranges. Industry guides often place average aluminium window pricing around £350–£750+ per window, with installation and specification affecting the final total.
Need a tailored aluminium window quote?
Every project is different. Speak to our experts for accurate pricing based on your window sizes, style, and installation requirements.
What Is Considered a “Standard” Aluminium Window?
When people ask about a standard aluminium window, they usually mean:
A typical casement window Roughly 900mm–1200mm wide, Around 1000mm–1200mm high, Double glazed, Powder-coated finish
Standard handle and hardware, Installed in a straightforward residential opening
Because aluminium windows are usually made to measure, “standard” sizes are often only a pricing guide—not a fixed product.
7 Factors That Affect Aluminium Window Cost
Understanding pricing means understanding what drives it.
1. Window Size
This is the biggest cost factor.
Larger windows require:
- More aluminium
- More glass
- Stronger reinforcement
- More labour to manufacture/install
Rule of thumb:
The bigger the window, the higher the price.
2. Window Style
Different styles cost different amounts.
Casement Windows – Usually the most affordable option.
Flush Casement Windows – Often more expensive due to premium detailing.
Sliding Windows – Typically higher cost because of track/mechanism.
Tilt & Turn Windows – More expensive due to complex hardware.
Fixed Picture Windows – Can sometimes be cheaper if non-opening.
3. Glazing Specification
Glazing upgrades increase cost.
Examples:
- Triple glazing
- Solar control glass
- Acoustic glass
- Obscure/privacy glass
- Laminated/security glass
- Self-cleaning glass
Premium glazing can add 10–40%+ depending on specification.
4. Colour / Finish
Standard powder-coated finishes are usually included.
Premium finishes may cost more:
- Dual colour frames
- Special RAL colours
- Textured finishes
- Metallic coatings
- Heritage finishes
5. Profile / System Brand
Premium aluminium systems cost more.
Examples include:
- Schüco
- Reynaers
- Origin
- Cortizo
- Smart Systems
- AluK
Higher-end systems typically offer:
- Better thermal performance
- Slimmer sightlines
- Premium aesthetics
- Improved warranties
6. Installation Complexity
Installation costs rise when:
- Access is difficult
- Upper floors require scaffolding
- Existing openings need alteration
- Structural supports/lintels are needed
- Internal/external finishing required
7. Quantity Ordered
Ordering multiple windows often reduces cost per unit.
Manufacturers/installers may offer: Bulk discounts, Better labour rates, Lower per-window transport costs
Aluminium Window Cost by Style
Here’s a more realistic breakdown of average pricing by window type:
Aluminium Casement Windows
Typical Cost: £350–£900+
The most common and affordable aluminium window style.
Best for:
- Residential homes
- Renovations
- Standard replacements
Aluminium Flush Casement Windows
Typical Cost: £500–£1,100+
Popular for:
- Heritage-look modern homes
- Premium residential projects
- Aluminium Sliding Windows
Typical Cost: £600–£1,500+
Usually more expensive due to:
- Larger glazed panels
- Track systems
- More complex mechanisms
Fixed Aluminium Picture Windows
Typical Cost: £300–£1,200+
Can be cheaper if small/non-opening, but large architectural units can become expensive.
Why Are Aluminium Windows More Expensive Than uPVC?
Many homeowners notice aluminium costs more than uPVC.
That’s because aluminium offers:
Slimmer Sightlines
- More glass
- Less frame
- Modern appearance
Greater Strength
Allows for:
- Larger openings
- Bigger glass panels
- More structural integrity
Longer Lifespan
Aluminium windows often last:
30–45+ years with proper maintenance.
Premium Finish
Powder-coated aluminium offers:
- Better aesthetics
- Greater durability
- Modern architectural appeal
Are Aluminium Windows Worth the Extra Cost?
For many homeowners, yes.
Although aluminium windows cost more upfront, they can provide better long-term value due to:
Durability
Aluminium resists:
- Warping
- Rotting
- Swelling
- Cracking
Low Maintenance
Typically requires:
- Occasional cleaning
- Minimal upkeep
Better Aesthetics
Popular for:
- Modern homes
- Extensions
- Renovations
- Contemporary architecture
Added Property Value
Premium aluminium glazing can improve:
- Kerb appeal
- Buyer perception
- Resale desirability
How Much Does It Cost to Replace All Windows with Aluminium?
| Property Type | Approx. Aluminium Window Cost |
|---|---|
| 1–2 Bed Flat | £4,000–£8,000 |
| 3 Bed House | £7,000–£12,000+ |
| 4 Bed House | £10,000–£18,000+ |
Whole-house replacement costs vary heavily by:
- Number of windows
- Window sizes
- Access
- Specification
- Installer rates
How to Reduce Aluminium Window Costs
If budget is a concern, consider:
Choose Standard Sizes Where Possible
Bespoke sizing increases cost.
Limit Premium Extras
Avoid unnecessary upgrades if budget-focused.
Replace Multiple Windows Together
Bulk ordering reduces per-unit cost.
Compare Quotes
Always obtain 3+ like-for-like quotes.
Choose Experienced Specialists
Cheap installers often cost more later.
Common Mistakes When Comparing Aluminium Window Quotes
Comparing Different Specifications
One quote may include:
- Better glazing
- Premium profile
- Installation finishing
- Scaffolding
Always compare like-for-like.
Focusing Only on Price
Cheapest isn’t always best.
Poor-quality systems may mean:
- Worse insulation
- Inferior hardware
- Shorter lifespan
- Poor installation
Ignoring Warranties
Check:
- Product warranty
- Installation warranty
- Manufacturer accreditation
Questions to Ask Before Buying Aluminium Windows
Before committing, ask:
- What profile system is being used?
- What is the U-value?
- Is installation included?
- Are trims/finishing included?
- Is scaffolding included?
- What warranty is provided?
- Are they FENSA/Certass registered?
Final Verdict: How Much Does a Standard Aluminium Window Cost?
So, how much should you expect to pay?
Typical UK Price Summary:
A standard aluminium window generally costs:
£350–£750+ supply only
£600–£1,200+ installed
With many homeowners seeing average market figures around £475 per window, though bespoke or premium configurations can exceed that substantially.
Should You Choose Aluminium Windows?
Choose aluminium if you want:
- Slim modern sightlines
- Long lifespan
- Premium aesthetics
- Better structural performance
- Low maintenance
Choose alternatives like uPVC if:
- Budget is your priority
- You want lowest upfront cost
Get Expert Advice on Aluminium Window Pricing
Every project is different, and the only way to get an accurate price is through a tailored quote based on your property, specification, and installation requirements.
At Durajoin, we supply and install bespoke aluminium windows across London, helping homeowners and developers choose the right system for their project and budget.
Planning to install aluminium windows?
At Durajoin, we supply and install bespoke aluminium windows and doors across London, helping homeowners and developers choose the right system for their project and budget.
