How Much Do Aluminium Windows Cost?

In Summary

• Aluminium windows typically cost between £350-£600 per window as per Checkatrade, with the average price around £475 in the UK
• Several factors influence the final price including window size, style (casement or flush sash), glazing options, and frame finish
• Coloured aluminium windows generally cost 10-20% more than standard finishes, with Anthracite Grey and Chartwell Green being popular choices
• Aluminium frames offer superior longevity (up to 45 years), slim sightlines, and excellent thermal efficiency with A++ energy ratings
• Professional installation is essential for optimal performance, security, and to maintain warranty coverage
• While initially more expensive than uPVC, aluminium windows provide worthwhile long-term value through durability, aesthetics, and energy savings

As with many home improvements, aluminium window prices can vary significantly based on numerous factors.

You’re not alone in querying the product, with aluminium frames becoming increasingly popular across the South East, whether it’s in central London, Berkshire, Surrey, Oxfordshire, etc, and for very good reason. They offer a sleek, contemporary appearance with impressively slim frames that maximise natural light intake, a growing priority for homeowners in the region.

Their strength, durability, and excellent thermal performance make them a worthwhile investment for many homeowners.

In this guide, we’ll break down the costs associated with aluminium windows, explore the factors that influence pricing, and explain why they represent excellent value despite their higher initial investment compared with uPVC.

Aluminium windows have a reputation for being low maintenance.

Factors That Can Influence the Cost of Aluminium Windows

Size

The size of the windows directly impacts their cost. Larger windows require more materials – both aluminium for the frames and glass for the glazing. The number of windows also plays a role, as each square metre of window requires additional manufacturing time and materials, which naturally increases the overall price.

For example, a standard casement window measuring approximately 600mm x 900mm will typically cost less than a larger window measuring 1200mm x 1200mm. When requesting quotes, precise measurements are essential for accurate pricing.

Style

The style of aluminium window styles you choose also affects the cost. At Unique Glazing, we offer two main styles:

Aluminium Casement Windows – These traditional outward-opening windows are London’s popular choice and typically represent our standard pricing option. Their simple design and functionality make them suitable for most properties.

Aluminium Flush Sash Windows – These premium windows feature sashes that sit flush with the frame, creating a sleek, minimalist appearance that’s particularly suited to contemporary homes. Due to their more complex design and manufacturing process, flush sash windows typically command a higher price point than standard casement options.

Glazing Options

The type of glazing you select has a substantial impact on the final cost of your aluminium windows:

Double Glazing – This is our standard offering, featuring two panes of glass with an insulating gap between them. Double glazing provides excellent thermal efficiency and noise reduction at a reasonable price point.

Triple Glazing – For ultimate energy efficiency and noise insulation, triple glazing uses three panes of glass with two insulating gaps. While offering superior performance, triple glazing typically increases costs by 30-40% compared to double glazing.

Additional glazing specifications such as toughened safety glass, acoustic glass, or decorative options will also increase the overall window cost.

Frame Finish

Aluminium window frames are available in a vast range of colours thanks to powder coating technology. While standard finishes like white or natural aluminium may be included in the base price, selecting a custom RAL colour will typically add 10-20% to the cost.

Anthracite grey and black remain our most popular colour choices due to their stylish appearance and ability to complement both traditional and contemporary architecture. These darker shades beautifully accentuate the slim aluminium frames and create a striking contrast with the glass.

Location

Your property’s location can influence installation costs. If your windows are difficult to access – for example, on upper floors requiring scaffolding – this will add to the overall price. Similarly, properties in London and certain parts of the South East may have higher installation costs due to regional price variations with the rest of the country.

Window Features

Additional features will increase the cost of your aluminium windows:

Thermal Break Technology – All our aluminium windows include polyamide thermal break technology as standard, significantly improving energy efficiency.

Security Features – While multi-point locking systems come standard with our windows, additional security options like child-proof locks or increased hardware will add to the cost.

Trickle Vents – These small ventilation slots allow controlled airflow and may be required by building regulations in certain situations.

Opening Configurations – Different opening options (such as top-hung or side-hung) can influence the final price.

Typical Price Ranges for Aluminium Windows

According to industry data from Checkatrade, aluminium windows in the UK typically cost between £350 and £600 per window, with an average cost of £475. This pricing generally refers to a standard-sized aluminium window without installation.

For aluminium sliding windows, which feature larger glass panels, prices typically range from £340 to £990, with an average cost of £665.

If you’re considering coloured aluminium windows, expect to pay approximately 10-20% more than standard finishes. For example, if a standard aluminium window costs around £475, then an anthracite grey window would likely cost between £525 and £570.

It’s worth noting that these figures provide a general guideline. The exact cost will depend on the specific requirements of your project, including window size, style, glazing options, and any additional features you choose.

For a comprehensive quotation tailored to your exact requirements, we recommend contacting our team directly. We provide detailed, transparent pricing that accounts for all aspects of your aluminium window installation.

The Importance of Quality

When considering aluminium windows, it’s crucial to look beyond the initial price tag. High-quality, well-installed aluminium windows deliver exceptional value over their lifetime through:

Energy Efficiency

Our aluminium windows achieve impressive A++ energy ratings with U-values as low as 1.1W/m²K. This exceptional thermal performance helps reduce heat loss through your windows and can potentially lower your carbon footprint while saving you a significant amount on energy bills annually. The innovative polyamide thermal break technology creates an effective barrier that significantly slows thermal transfer.

Over the typical 30-45 year lifespan of aluminium windows, these energy savings can substantially offset the initial investment. As energy costs continue to rise, this benefit becomes increasingly valuable.

Longevity and Durability

Aluminium frames are incredibly durable, typically lasting up to 45 years with minimal maintenance. Unlike other materials, aluminium won’t warp, crack, or rot over time. The powder-coated finish remains vibrant despite years of exposure to harsh weather conditions and UV rays.

This exceptional longevity means that while aluminium windows may have a higher upfront cost, their cost per year of service is often lower than less expensive alternatives that require less maintenance and replacement sooner.

Aesthetic Value

The thin frames and clean lines of aluminium windows can transform the appearance of your property, a great choice if you’re looking to increase its market value. The minimal frame width maximises glass area, allowing more natural light into your home while creating a contemporary, architectural look that’s highly desirable.

Reduced Maintenance Costs

Unlike timber windows that require regular repainting and treatment, aluminium windows need only occasional cleaning with soapy water to maintain their appearance. This reduces ongoing maintenance costs over the lifetime of the windows.

Risks of Inexperienced Installation

It’s worth emphasising that professional installation is essential for aluminium windows. Incorrect installation can compromise:

• Energy efficiency through improper sealing
• Security through incorrectly fitted locking mechanisms
• Weather resistance, potentially leading to water ingress and damage
• Warranty coverage, which typically requires professional fitting

DIY installation may seem like a way to reduce costs, but the long-term expenses from potential problems and reduced performance far outweigh any initial savings.

Aluminium Windows from Unique Glazing

At Unique Glazing, we offer premium aluminium windows that combine exceptional quality with competitive pricing. Our windows feature:

• Ultraslim sightlines for maximum natural light
• A++ energy ratings for optimal thermal efficiency
• U-values as low as 1.1W/m²K, exceeding building regulations
• State-of-the-art polyamide thermal break technology
• Multi-point locking systems as standard for enhanced security
• Double or triple glazing options to suit your requirements
• Bespoke manufacturing to your exact specifications
• A complete range of colours and finishes

Our aluminium windows are available in two main styles:

Aluminium Casement Windows – Classic, versatile windows that suit almost any property type, offering excellent ventilation and clean sight lines.

Aluminium Flush Sash Windows – Premium windows where the sash sits flush with the frame, creating a sleek, minimalist appearance perfect for contemporary homes.

Both styles can be tailored to your exact requirements, with various opening configurations, glazing options, and finishes available.

Who Are Unique Glazing?

We are a family-run business with over two decades of experience in the glazing industry. As manufacturers and installers of top-quality uPVC and aluminium windows, doors, and glazed extensions, we bring unique, bespoke solutions to homeowners across the South East.

Our commitment to quality is reflected in our numerous accreditations, including:

• FENSA Approved Installers
• Liniar Approved Fabricators and Installers

These accreditations allow us to provide comprehensive insurance-backed 10-year guarantees on all our products, giving you complete peace of mind.

We manufacture the majority of our products in our innovative 6000 sq ft factory facility, equipped with specialist machinery. This gives us complete control over quality, schedules, and pricing, resulting in outstanding craftsmanship, shorter lead times, and competitive prices.

Our customer-focused approach means we keep the consultation process simple – typically no more than 30 minutes to measure up and discuss your project. We then provide a no-obligation quotation, followed by e-sign contracts for ease, a thorough survey, professional installation, and a dedicated aftercare service.

To discuss your aluminium window requirements or to arrange a consultation, contact us on 0800 193 2425 or email sales@uniqueglazing.co.uk. Our team of experts is ready to help you find the perfect aluminium windows for your home.

The Verdict

While aluminium windows represent a higher initial investment compared to some alternatives, their exceptional quality, outstanding performance, and impressive longevity make them a cost-effective choice in the long run. With prices typically ranging from £350 to £600 per window, they offer excellent value when you consider their 30-45 year lifespan, minimal maintenance requirements, and superior thermal performance.

At Unique Glazing, we’re committed to providing high-quality aluminium windows at competitive prices, with transparent quotations that reflect your specific requirements. Our expertise in both manufacturing and installation ensures that your new windows will deliver exceptional performance for decades to come, making them a worthwhile investment for your home.

For a personalised quote or to learn more about our aluminium window options, contact our team today on 0800 193 2425 or email sales@uniqueglazing.co.uk.