Aluminium Windows South London & Surrey

Glitz Windows & Doors design, supply and fit aluminium windows for homeowners across South London and Surrey. We cover everything from slim casements on a new extension to heritage-style sash replacements on a period terrace. We also handle aluminium window installation, repair and replacement, so whether you’re starting from scratch, fixing a problem or upgrading tired frames, one local team can look after the whole job.

What Are Aluminium Windows?

Aluminium windows are frames made from extruded aluminium rather than uPVC or timber. The metal is shaped into hollow profiles, then finished with a powder coating or anodised layer in more or less any colour you’d want.

Most modern systems include a “thermal break”, a strip of polyamide between the inner and outer sections of the frame. It stops heat and cold from passing straight through the metal. Older frames from the 1970s and 80s didn’t have this, which is largely why aluminium earned a reputation for being cold and draughty. That reputation doesn’t apply to today’s double glazing or triple glazing, which can achieve strong energy ratings when properly specified.

Aluminium is roughly a third the weight of steel, yet stronger than uPVC of the same thickness. That lets manufacturers produce slimline frames with much narrower sightlines while still meeting UK structural requirements. In practice you get more glass, more daylight and a cleaner, contemporary look. It’s a big reason aluminium has become the standard choice for extensions, orangeries and architect-led refurbishments.

Benefits of Aluminium Windows

Strength & Durability

Aluminium’s strength-to-weight ratio means these frames hold their shape well over time — they’re not prone to the warping, bowing or corner-sagging you can sometimes see with timber or lower-grade uPVC after a few winters. The material doesn’t rot, rust or swell with damp, which matters in the UK climate. Fitted and maintained properly, they can comfortably outlast a standard uPVC installation.

Low Maintenance

There’s no painting, sanding or re-varnishing required. The factory-applied powder coating or anodised finish generally just needs an occasional wipe with warm water and a mild, non-abrasive detergent to keep it looking right — about as low-maintenance as glazing gets.

Energy Efficiency

A thermally broken frame combined with modern double or triple glazed units can achieve strong U-values and Window Energy Rating (WER) scores. Depending on the specification, that can mean less heat escaping, lower bills, reduced condensation and a better EPC rating, which is worth factoring in if a sale or remortgage is on the horizon. Actual performance depends on the glazing, frame size and installation, so we talk through the specification for your particular property.

Enhanced Security

These frames are typically fitted with multi-point locking systems, and the rigidity of the metal itself makes them harder to force than older timber or basic uPVC casements. We can also specify toughened or laminated glass and reinforced hardware where extra security matters — particularly worth considering for ground-floor and rear-facing openings.

Sustainability & Recyclability

Aluminium is fully and repeatedly recyclable without losing its structural properties, and a good proportion of what’s used in window systems today is already recycled material. Recycling it also uses significantly less energy than producing it from raw ore. For homeowners thinking about long-term sustainability, it’s a genuinely sound choice.

Aluminium Window Styles We Offer

Aluminium Casement Windows

Slim, versatile and reliable windows designed to maximise natural light, unobstructed views and ventilation, with strong energy efficiency.

Aluminium Tilt & Turn Windows

Secure, practical and easy-to-clean windows designed to provide flexible ventilation, wide-opening access and excellent energy efficiency.

Aluminium Bay & Bow Windows

Elegant, space-enhancing windows designed to bring in more natural light, add kerb appeal and create a brighter, more open feel inside.

Aluminium Sliding Sash Windows

Classic, heritage-style windows designed to keep the traditional sash look while adding modern security, comfort and thermal performance.

Aluminium Flush Sash Windows

Neat, timber-look windows designed to give a sleek, sympathetic finish for period homes, with long-lasting durability and low maintenance.

Aluminium Windows Installation in South London & Surrey

A well-made window only performs as well as it’s fitted. Poor installation is behind most draughts, leaks and condensation complaints, however good the frame is. Our aluminium window installation service covers the whole process:

Free survey and measure. We visit your property, check the openings, discuss style, glazing and colour, and note any access issues.
Clear written quote. You get a personalised quote based on your actual windows, not a generic package.
Made-to-measure manufacture. Frames are built to your exact sizes and finish, including bespoke RAL colours.
Careful fitting. Our installers remove the old frames, fit and seal the new units, make good the surrounding area and clear up after themselves.
FENSA certification. We register the work, so you receive the compliance certificate you’ll need when you sell or remortgage.

We install aluminium windows in new-builds, extensions, period properties and commercial buildings, including conservation areas where planning guidance applies.

Aluminium Windows Replacement

Replacing your windows is a bigger decision than repairing them, so it’s worth knowing when it makes sense. Aluminium window replacement is usually the right call if:

Your existing frames are old, single glazed or have no thermal break
You have draughts, cold spots or condensation between the panes
Multiple units have failed seals or “misted” glass
Frames are corroded, bent or no longer close properly
You want to upgrade to a slimmer, more modern look, or improve your EPC rating
You’re replacing tired timber or uPVC with something more durable

We replace like-for-like where you want to keep the original look, and we can also upgrade styles. For example, we can swap bulky frames for slim-sightline casements, or fit heritage-style sash windows to restore a period property’s character. We also advise on whether a full-house replacement or a phased approach suits your budget.

Aluminium Windows Repair

Not every problem means new windows. Aluminium frames are tough, and many faults can be fixed at a fraction of the cost of replacement. Common aluminium window repairs include:

Misted or failed double glazing units. Condensation trapped between the panes usually means a failed seal, and the sealed unit can often be replaced without changing the frame.
Worn or broken hardware. Handles, hinges, friction stays and multi-point locks can be replaced or adjusted.
Stiff, sticking or misaligned sashes. Windows that won’t close properly can often be re-aligned or re-set.
Draughts and worn seals. Replacing gaskets and weatherseals can bring back comfort and cut heat loss.
Cracked or broken glass. We can supply and fit replacement glazing, including toughened or laminated glass.
Damaged or faded finishes. Minor damage can sometimes be repaired, and some frames can be professionally resprayed.

If we survey your windows and repair is the sensible option, we’ll tell you. If the frames are beyond economical repair, we’ll explain why and talk you through replacement.

Aluminium Windows for Different Properties

Period & Character Homes

For Victorian, Edwardian and Georgian homes, heritage-style sash windows preserve traditional character while improving comfort, security and energy efficiency. Listed or conservation properties may need planning approval.

Modern New-Builds

New-builds and contemporary extensions tend to suit the slim sightlines of casement or tilt and turn styles, often specified in anthracite grey, black, or a bespoke RAL colour to match current architectural trends.

Commercial Properties

Commercial aluminium windows are widely used in offices, shopfronts and mixed-use buildings for their strength, low upkeep, fire-rated options where required, and ability to span larger openings without compromising structural integrity.

Extensions & Conservatories

Large glazed extensions and orangeries benefit from this material's strength-to-weight ratio, allowing bigger panes and slimmer sightlines than a comparable timber or uPVC structure — particularly useful for bi-fold doors and large fixed-pane installations.

Why Choose Glitz Windows & Doors for Aluminium Windows?

FENSA Registered & Fully Insured

Every window we install is certified through FENSA, giving you full building regulations compliance and the paperwork to prove it — something you'll want in hand when you come to sell.

A-Rated Energy Efficiency

We specify A-rated systems with energy-efficient glazing suited to your property, rather than recommending the same package to every customer regardless of what the house actually needs.

10-Year Guarantee

Every installation comes with a comprehensive 10-year guarantee covering both the frames and our workmanship.

25+ Years' Local Experience

We've been fitting windows and doors across South London and Surrey for more than 25 years, which means a genuine working knowledge of local property types, planning quirks and conservation area requirements that a national call-centre installer typically won't have.

Why Choose Our Aluminium Windows?

Choosing Glitz Windows & Doors means working with a local, established team rather than a national chain reading from a script. We bring together A-rated thermal performance, genuinely slim contemporary sightlines, bespoke colour finishes, and real familiarity with South London and Surrey properties, from Victorian conversions to new-build developments, to deliver a job that’s fitted right the first time, backed by a 10-year guarantee, from a team that’s still going to be here if you ever need us.
If you’re comparing prices, the total will depend on the number and size of windows, style, glazing, colour, access and installation requirements. The best way to get a figure that means anything is a survey and a personalised quote.

What Our Customers Says About Us

Aluminium Windows - FAQs

Are Aluminium Windows Better Than uPVC?

It depends what you’re optimising for. This material tends to win on slim sightlines, larger glass areas, strength and a more contemporary look, while uPVC usually wins on upfront cost. For a period property or an extension where appearance and glass area matter, aluminium is usually the better fit; for a straightforward budget-conscious replacement, uPVC can still make sense.

Are Aluminium Windows Energy Efficient?

Yes, when properly specified. Modern thermally broken frames paired with double or triple glazing can achieve strong U-values and A-rated performance. Older, non-thermally-broken frames performed poorly by comparison, which is where the material’s reputation for being “cold” originally came from — it doesn’t really apply to current systems.

How Much Do Aluminium Windows Cost?

Based on current UK cost guides, a standard casement window typically costs somewhere in the region of £450–£1,300 fully fitted, with premium or bespoke designs running higher. A full-house replacement (around 8–10 windows) on a typical semi tends to land somewhere between £4,000 and £16,000 depending on style, glazing and access. These are general market guide figures rather than a quote — the only way to get an accurate number for your property is a free survey.

Can Aluminium Windows Be Repaired?

Often, yes. Hardware, seals, handles, locks and failed glazing units can usually be repaired or replaced without changing the whole frame. If the frames themselves are badly damaged, corroded or outdated, replacement is usually better value in the long run.

How Long Do Aluminium Windows Last?

Well-made, correctly installed frames typically last 35–45 years, sometimes longer, compared with around 20–25 years for standard uPVC — thanks largely to their resistance to warping, rotting and corrosion. Actual lifespan also depends on the glass, seals, hardware and how well they’re maintained.

What's the Difference Between Aluminium and uPVC?

Aluminium is the stronger, slimmer material of the two, allowing narrower frames and larger glass areas along with a more contemporary appearance, and it’s widely recyclable. uPVC generally has a lower upfront cost and a chunkier profile, and remains a solid option for budget-conscious replacement projects. Both can perform well thermally when properly manufactured and installed.

Are Aluminium Windows Cheaper Than uPVC?

No, this material typically costs more upfront than uPVC, often somewhere around 30–60% more depending on style and specification. Many homeowners still choose it for the slimmer appearance, strength and longer lifespan, which can make it better long-term value even with the higher initial cost.

Can Aluminium Windows Be Painted?

Not in the way you’d paint a wooden frame. Frames are finished at the factory using powder coating or anodising, which gives a far more durable, longer-lasting finish than paint would. Some can be professionally resprayed later if you want a colour change, but standard household paint isn’t recommended — it’s best to choose your colour before the windows are manufactured.

Aluminium Window Installation, Repairs & Replacement

Need Aluminium Window Services in South London & Surrey?

Whether you’re installing new aluminium windows, replacing old ones or need a repair, our team is here to help.

Our recent Aluminium windows Projects

Make Appointment

Get a free quote with no obligation - Contact us now

Have a unique idea or specific requirements? Our team specialises in tailored window and door solutions to suit your vision—built to exact specifications and installed with precision.