Published on: May 1, 2025
Choosing between uPVC and aluminium
What You Need to Know
When considering window replacements or new installations, two materials consistently stand out: UPVC (Unplasticised Polyvinyl Chloride) and Aluminium.Each offers distinct advantages in terms of performance, appearance, and longevity, but also comes with unique cost implications.
For homeowners in London and Essex, where property styles range from modern apartments to Victorian terraces, understanding the true cost dynamics of these window types is essential.
Factors such as energy efficiency, maintenance needs, visual appeal, and long-term value play a vital role in the decision-making process.
Making the right choice can not only improve your home's comfort and security but also enhance its market value and aesthetic appeal.
Key factors influencing the cost of uPVC and aluminium windows
1. Material Costs
The base material is a significant factor. UPVC windows are generally more affordable than aluminium because of the lower production cost of the material. UPVC is a synthetic plastic polymer, known for being lightweight, insulating, and inexpensive to manufacture.
In contrast, aluminium windows are made from premium-grade metal, offering enhanced strength, longevity, and sleek aesthetics.
This makes aluminium a more costly option, although it justifies the price with superior durability and minimal maintenance.
2. Window Style and Configuration
The style of the window directly influences the cost.
Common styles include:
. Casement windows
. Sliding sash windows
. Tilt and turn windows
. Bay or bow windows
Complex configurations like bay windows or multi-panel sliding systems require more materials and labour, thereby increasing the price.
Aluminium frames, due to their structural strength, support larger panes and minimalistic frames, which can increase costs due to high-performance glass requirements.
3. Glazing Options
Single glazing is rare today. Most installations in London and Essex are double or triple glazed for enhanced thermal insulation and noise reduction.
. Double glazing is standard for both UPVC and aluminium.
. Triple glazing, though more costly, offers superior thermal performance, particularly in aluminium frames.
Low-E coatings, argon gas fills, and laminated safety glass will also raise costs, but improve energy efficiency and home security.
4. Energy Efficiency and U-Values
UPVC windows typically offer better thermal performance due to the insulative nature of the material. Aluminium windows, however, now come with thermal breaks an insulating barrier between the inside and outside of the frame—making them more competitive in terms of energy efficiency.
Better U-values (a measure of heat transfer) usually translate to higher upfront costs, but lower heating bills in the long run.
5. Security Features
Security is a growing concern for homeowners in urban areas like London and Essex.
Enhanced features such as:
. Multi-point locking systems
. Toughened safety glass
. Security hinges
. Reinforced frames
These features are available on both UPVC and aluminium, with customisation options driving prices up.
Aluminium frames, being more rigid, often command a premium for top-tier security installations.
6. Colour and Finish
UPVC windows typically come in white, but modern options allow for foiled finishes that mimic wood grain or offer colours like anthracite grey. These finishes increase cost slightly.
Aluminium windows offer a wider variety of powder-coated colours, including RAL custom colours and dual colour options (different inside and outside).
The powder-coating process, especially for custom shades, adds to the final price but offers a more contemporary, upscale look.
7. Labour and Installation Costs
The complexity of installation affects the overall cost. Homes with older architecture or custom-shaped window openings may require bespoke fittings, which drive up labour expenses.
Aluminium windows, being heavier and more precise in their construction, may require specialist installers, especially for large-scale glass panels or bi-fold doors, which adds to the overall cost.
In areas like London, labour charges are typically higher than in rural regions due to the cost of living and business overheads.
Average price estimates in London and Essex
While costs vary based on the above factors, here is a general breakdown:
| Window Type | UPVC (Per Unit) | Aluminium (Per Unit) |
|---|---|---|
| Casement | £300 - £500 | £500 - £800 |
| Sliding Sash | £500 - £700 | £700 - £1,000 |
| Tilt and Turn | £400 - £600 | £600 - £900 |
| Bay Window | £1,000 - £1,500 | £1,500 - £2,500 |
Pros and cons of uPVC vs aluminium windows
UPVC Windows
Pros:
- . Lower initial cost
- . Great thermal insulation
- . Low maintenance
- . Corrosion-resistant
Cons:
- . Less durable in the long term
- . Limited aesthetic appeal
- . Bulkier frames reduce glass area
Aluminium Windows
Pros:
- . Sleek, modern appearance
- . Longer lifespan
- . Supports larger glass panes
- . More colour and design option
Cons:
- . Higher upfront cost
- . Poor thermal performance without thermal breaks
- . Requires professional installation
Budgeting tips for homeowners
1. Set Priorities
Determine whether aesthetics, insulation, or security is your top priority. This will help you choose between UPVC and aluminium windows more effectively.
2. Get Multiple Quotes
Obtain at least three detailed quotations from installers in London or Essex. Ensure they include a breakdown of materials, labour, and warranties.
3. Don’t Cut Corners on Glazing
Invest in double or triple glazing with good U-values. It improves comfort and long-term savings, especially with rising energy costs.
4. Choose Trusted Installers
A poor installation can negate the benefits of even the best windows. Look for certified companies with positive reviews and comprehensive warranties.
5. Time Your Installation
Prices can fluctuate seasonally. Winter is often slower for installers, and you may negotiate a better rate.
Making the right window investment for your home in London or Essex
Choosing between UPVC and aluminium windows is not simply a matter of style, it's a strategic investment in your home's comfort, energy efficiency, and long-term value. Each material has its own strengths:UPVC is ideal for homeowners who prioritise cost-efficiency, thermal insulation, and low maintenance, particularly in traditional or suburban homes throughout Essex.
Aluminium, on the other hand, appeals to those looking for premium aesthetics, durability, and slimline profiles that complement contemporary homes and urban properties in London.
Whether you’re upgrading a single window or planning a full renovation, understanding the factors that influence window pricing, including material type, glazing, security features, and installation complexity—will help you allocate your budget wisely.
If you're still unsure which option best suits your property, or if you'd like personalised advice and pricing, we encourage you to get in touch with Taylorglaze.
Our team proudly serves homeowners across London and Essex, offering expert consultations, competitive quotes, and high-quality installations tailored to your needs.
Make a choice that enhances your lifestyle today and adds value tomorrow.
